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| versions
list | update_date
timestamp[s] | authors_parsed
sequence |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0706.1114 | Mikhail Plyushchay | Francisco Correa and Mikhail S. Plyushchay | Peculiarities of the hidden nonlinear supersymmetry of Poschl-Teller
system in the light of Lame equation | 10 pages, typos corrected; to appear in J. Phys. A | J.Phys.A40:14403-14412,2007 | 10.1088/1751-8113/40/48/007 | null | hep-th math-ph math.MP nlin.SI quant-ph | null | A hidden nonlinear bosonized supersymmetry was revealed recently in
Poschl-Teller and finite-gap Lame systems. In spite of the intimate
relationship between the two quantum models, the hidden supersymmetry in them
displays essential differences. In particular, the kernel of the supercharges
of the Poschl-Teller system, unlike the case of Lame equation, includes
nonphysical states. By means of Lame equation, we clarify the nature of these
peculiar states, and show that they encode essential information not only on
the original hyperbolic Poschl-Teller system, but also on its singular
hyperbolic and trigonometric modifications, and reflect the intimate relation
of the model to a free particle system.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 18:25:14 GMT"
},
{
"version": "v2",
"created": "Thu, 14 Jun 2007 20:37:59 GMT"
},
{
"version": "v3",
"created": "Sat, 25 Aug 2007 22:11:47 GMT"
},
{
"version": "v4",
"created": "Wed, 17 Oct 2007 06:53:42 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Correa",
"Francisco",
""
],
[
"Plyushchay",
"Mikhail S.",
""
]
] |
0706.1115 | Kazuhito Mizuyama | Kazuhito Mizuyama, Masayuki Matsuo, Yasuyoshi Serizawa | Continuum quasiparticle linear response theory using the Skyrme
functional for multipole responses of exotic nuclei | null | Phys.Rev.C79:024313,2009 | 10.1103/PhysRevC.79.024313 | null | nucl-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We develop a new formulation of the continuum quasiparticle random phase
approximation (QRPA) in which the residual interaction is derived directly from
the Skyrme energy functional, keeping all the velocity dependent terms of the
Skyrme effective interaction. Numerical analysis using the SkM$^*$ parameter
set is performed for the isovector dipole and the isovector/isoscalar
quadrupole responses in $^{20}$O and $^{54}$Ca. It is shown that the
energy-weighted sum rule including the enhancement factors for the isovector
responses is satisfied with good accuracy. We investigate also how the velocity
dependent terms influence the strength distribution and the transition
densities of the low-lying surface modes and the giant resonances.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 06:17:44 GMT"
},
{
"version": "v2",
"created": "Mon, 12 Jan 2009 18:46:32 GMT"
}
] | 2012-09-24T00:00:00 | [
[
"Mizuyama",
"Kazuhito",
""
],
[
"Matsuo",
"Masayuki",
""
],
[
"Serizawa",
"Yasuyoshi",
""
]
] |
0706.1116 | Susumu Takahashi | Susumu Takahashi, Gerald Ramian, Mark S. Sherwin, Louis-Claude Brunel
and Johan van Tol | Sub-MHz Linewidth at 240 GHz from an Injection-Locked Free-Electron
Laser | 3 pages including 3 figures | null | 10.1063/1.2801700 | null | cond-mat.other | null | Radiation from an ultra-stable 240 GHz solid-state source has been injected,
through an isolator, into the cavity of the University of California Santa
Barbara (UCSB) MM-wave free-electron laser (FEL). High-power FEL emission,
normally distributed among many of the cavity's longitudinal modes, is
concentrated into the single mode to which the solid state source has been
tuned. The linewidth of the FEL emission is 0.5 MHz, consistent with the
Fourier transform limit for the 2 microsecond pulses. This demonstration of
frequency-stable, ultra-narrow-band FEL emission is a critical milestone on the
road to FEL-based pulsed electron paramagnetic resonance spectroscopy.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 06:44:39 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Takahashi",
"Susumu",
""
],
[
"Ramian",
"Gerald",
""
],
[
"Sherwin",
"Mark S.",
""
],
[
"Brunel",
"Louis-Claude",
""
],
[
"van Tol",
"Johan",
""
]
] |
0706.1117 | Denis Vodolazov | D.Y. Vodolazov and F.M. Peeters | Rearrangement of the vortex lattice due to instabilities of vortex flow | 10 pages, 11 figures | null | 10.1103/PhysRevB.76.014521 | null | cond-mat.supr-con | null | With increasing applied current we show that the moving vortex lattice
changes its structure from a triangular one to a set of parallel vortex rows in
a pinning free superconductor. This effect originates from the change of the
shape of the vortex core due to non-equilibrium effects (similar to the
mechanism of vortex motion instability in the Larkin-Ovchinnikov theory). The
moving vortex creates a deficit of quasiparticles in front of its motion and an
excess of quasiparticles behind the core of the moving vortex. This results in
the appearance of a wake (region with suppressed order parameter) behind the
vortex which attracts other vortices resulting in an effective
direction-dependent interaction between vortices. When the vortex velocity $v$
reaches the critical value $v_c$ quasi-phase slip lines (lines with fast vortex
motion) appear which may coexist with slowly moving vortices between such
lines. Our results are found within the framework of the time-dependent
Ginzburg-Landau equations and are strictly valid when the coherence length
$\xi(T)$ is larger or comparable with the decay length $L_{in}$ of the
non-equilibrium quasiparticle distribution function. We qualitatively explain
experiments on the instability of vortex flow at low magnetic fields when the
distance between vortices $a \gg L_{in} \gg \xi (T)$. We speculate that a
similar instability of the vortex lattice should exist for $v>v_c$ even when
$a<L_{in}$.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 06:45:02 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Vodolazov",
"D. Y.",
""
],
[
"Peeters",
"F. M.",
""
]
] |
0706.1118 | Samuel Mimram | Paul-Andr\'e Melli\`es (PPS), Samuel Mimram (PPS) | Asynchronous games: innocence without alternation | null | null | null | null | cs.LO | null | The notion of innocent strategy was introduced by Hyland and Ong in order to
capture the interactive behaviour of lambda-terms and PCF programs. An innocent
strategy is defined as an alternating strategy with partial memory, in which
the strategy plays according to its view. Extending the definition to
non-alternating strategies is problematic, because the traditional definition
of views is based on the hypothesis that Opponent and Proponent alternate
during the interaction. Here, we take advantage of the diagrammatic
reformulation of alternating innocence in asynchronous games, in order to
provide a tentative definition of innocence in non-alternating games. The task
is interesting, and far from easy. It requires the combination of true
concurrency and game semantics in a clean and organic way, clarifying the
relationship between asynchronous games and concurrent games in the sense of
Abramsky and Melli\`es. It also requires an interactive reformulation of the
usual acyclicity criterion of linear logic, as well as a directed variant, as a
scheduling criterion.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 06:56:31 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Melliès",
"Paul-André",
"",
"PPS"
],
[
"Mimram",
"Samuel",
"",
"PPS"
]
] |
0706.1119 | Stefan Stefanov Z | Stefan Z. Stefanov | Cointegration of the Daily Electric Power System Load and the Weather | 8 pages, extended version | null | null | null | cs.CE | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The paper makes a thermal predictive analysis of the electric power system
security for a day ahead. This predictive analysis is set as a thermal
computation of the expected security. This computation is obtained by
cointegrating the daily electric power systen load and the weather, by finding
the daily electric power system thermodynamics and by introducing tests for
this thermodynamics. The predictive analysis made shows the electricity
consumers' wisdom.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:04:24 GMT"
},
{
"version": "v2",
"created": "Mon, 24 Jan 2011 11:53:45 GMT"
}
] | 2011-01-25T00:00:00 | [
[
"Stefanov",
"Stefan Z.",
""
]
] |
0706.1120 | William Wylie | Guofang Wei and Will Wylie | Comparison Geometry for the Bakry-Emery Ricci Tensor | 21 pages, Some of the estimates have been improved. In light of some
new references, and to improve the exposition, the paper has been
reorganized. An appendix is also added | null | null | null | math.DG | null | For Riemannian manifolds with a measure $(M,g, e^{-f} dvol_g)$ we prove mean
curvature and volume comparison results when the $\infty$-Bakry-Emery Ricci
tensor is bounded from below and $f$ is bounded or $\partial_r f$ is bounded
from below, generalizing the classical ones (i.e. when $f$ is constant). This
leads to extensions of many theorems for Ricci curvature bounded below to the
Bakry-Emery Ricci tensor. In particular, we give extensions of all of the major
comparison theorems when $f$ is bounded. Simple examples show the bound on $f$
is necessary for these results.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:31:16 GMT"
},
{
"version": "v2",
"created": "Fri, 14 Sep 2007 21:28:13 GMT"
}
] | 2011-11-10T00:00:00 | [
[
"Wei",
"Guofang",
""
],
[
"Wylie",
"Will",
""
]
] |
0706.1121 | Suresh Chandra | Suresh Chandra and B.K. Kumthekar | Controversy on a dispersion relation for MHD waves | 5 pages | null | null | null | astro-ph | null | Kumar et al. (2006) obtained a fifth order polynomial in $\omega$ for the
dispersion relation and pointed out that the calculations preformed by Porter
et al. (1994) and by Dwivedi & Pandey (2003) seem to be in error, as they
obtained a sixth order polynomial. The energy equation of Dwivedi & Pandey
(2003) was dimensionally wrong. Dwivedi & Pandey (2006) corrected the energy
equation and still claimed that the dispersion relation must be a sixth order
polynomial. The equations (11) $-$ (19) of Dwivedi & Pandey (2006) and the
equations (24) $-$ (32) Kumar et al. (2006) are the same. This fact has been
expressed by Kumar et al. (2006) themselves. Even then they tried to show this
set of equations on one side gives the sixth order polynomial as they got; on
the other side, the same set of equations gives the fifth order polynomial as
Kumar et al. (2006) obtained. The situation appears to be non-scientific, as
the system of equations is a linear one. These are simple algebraic equations
where the variables are to be eliminated. However, it is a matter of surprise
that by solving these equations, two scientific groups are getting polynomials
of different degrees. In the present discussion, we have attempted to short out
this discrepancy.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:40:16 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Chandra",
"Suresh",
""
],
[
"Kumthekar",
"B. K.",
""
]
] |
0706.1122 | Maret Einasto | M. Einasto, E. Saar, L.J. Liivam"agi, J. Einasto, E. Tago, V.J.
Martinez, J.-L. Starck, V. M"uller, P. Hein"am"aki, P. Nurmi, M. Gramann, G.
H"utsi | The richest superclusters. I. Morphology | 14 pages, 8 figures, submitted to Astronomy and Astrophysics | Astron.Astrophys.476:697,2007 | 10.1051/0004-6361:20078037 | null | astro-ph | null | We study the morphology of the richest superclusters from the catalogues of
superclusters of galaxies in the 2dF Galaxy Redshift Survey and compare the
morphology of real superclusters with model superclusters in the Millennium
Simulation. We use Minkowski functionals and shapefinders to quantify the
morphology of superclusters: their sizes, shapes, and clumpiness. We generate
empirical models of simple geometry to understand which morphologies correspond
to the supercluster shapefinders. We show that rich superclusters have
elongated, filamentary shapes with high-density clumps in their core regions.
The clumpiness of superclusters is determined using the fourth Minkowski
functional $V_3$. In the $K_1$-$K_2$ shapefinder plane the morphology of
superclusters is described by a curve which is characteristic to
multi-branching filaments. We also find that the differences between the fourth
Minkowski functional $V_3$ for the bright and faint galaxies in observed
superclusters are larger than in simulated superclusters.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:48:28 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Einasto",
"M.",
""
],
[
"Saar",
"E.",
""
],
[
"Liivam\"agi",
"L. J.",
""
],
[
"Einasto",
"J.",
""
],
[
"Tago",
"E.",
""
],
[
"Martinez",
"V. J.",
""
],
[
"Starck",
"J. -L.",
""
],
[
"M\"uller",
"V.",
""
],
[
"Hein\"am\"aki",
"P.",
""
],
[
"Nurmi",
"P.",
""
],
[
"Gramann",
"M.",
""
],
[
"H\"utsi",
"G.",
""
]
] |
0706.1123 | Peter Haissinsky | Peter Ha\"issinsky (LATP), Kevin M. Pilgrim | Thurston obstructions and Ahlfors regular conformal dimension | Minor revisions are made | Journal de Math\'ematiques Pures et Appliqu\'es 90, no. 3 (2008)
229--241 | null | null | math.DS | null | Let $f: S^2 \to S^2$ be an expanding branched covering map of the sphere to
itself with finite postcritical set $P_f$. Associated to $f$ is a canonical
quasisymmetry class $\GGG(f)$ of Ahlfors regular metrics on the sphere in which
the dynamics is (non-classically) conformal. We show \[ \inf_{X \in \GGG(f)}
\hdim(X) \geq Q(f)=\inf_\Gamma \{Q \geq 2: \lambda(f_{\Gamma,Q}) \geq 1\}.\]
The infimum is over all multicurves $\Gamma \subset S^2-P_f$. The map
$f_{\Gamma,Q}: \R^\Gamma \to \R^\Gamma$ is defined by \[ f_{\Gamma, Q}(\gamma)
=\sum_{[\gamma']\in\Gamma} \sum_{\delta \sim \gamma'} \deg(f:\delta \to
\gamma)^{1-Q}[\gamma'],\] where the second sum is over all preimages $\delta$
of $\gamma$ freely homotopic to $\gamma'$ in $S^2-P_f$, and $
\lambda(f_{\Gamma,Q})$ is its Perron-Frobenius leading eigenvalue. This
generalizes Thurston's observation that if $Q(f)>2$, then there is no
$f$-invariant classical conformal structure.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:49:04 GMT"
},
{
"version": "v2",
"created": "Fri, 22 Jun 2007 15:24:00 GMT"
},
{
"version": "v3",
"created": "Fri, 13 Jun 2008 17:31:54 GMT"
}
] | 2009-07-03T00:00:00 | [
[
"Haïssinsky",
"Peter",
"",
"LATP"
],
[
"Pilgrim",
"Kevin M.",
""
]
] |
0706.1124 | Mircea Mustata | Mircea Mustata and Ken-ichi Yoshida | Test ideals vs. multiplier ideals | 14 pages; v.2: typos corrected; v.3: minor revision, to appear in
Nagoya Mathematical Journal | null | null | null | math.AC math.AG | null | The generalized test ideals introduced in [HY] are related to multiplier
ideals via reduction to characteristic p. In addition, they satisfy many of the
subtle properties of the multiplier ideals, which in characteristic zero follow
via vanishing theorems. In this note we give several examples to emphasize the
different behavior of test ideals and multiplier ideals. Our main result is
that every ideal in an F-finite regular local ring can be written as a
generalized test ideal. We also prove the semicontinuity of $F$-pure thresholds
(though the analogue of the Generic Restriction Theorem for multiplier ideals
does not hold).
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:52:44 GMT"
},
{
"version": "v2",
"created": "Tue, 17 Jul 2007 10:16:34 GMT"
},
{
"version": "v3",
"created": "Tue, 3 Jun 2008 07:14:16 GMT"
}
] | 2008-06-03T00:00:00 | [
[
"Mustata",
"Mircea",
""
],
[
"Yoshida",
"Ken-ichi",
""
]
] |
0706.1125 | Egle Tomasi-Gustafsson | C. Adamu\v{s}\v{c}\'in, G. I. Gakh, E. Tomasi-Gustafsson | Polarization effects in the reaction $e^++e^-\to \rho^+ +\rho^- $ and
determination of the $\rho -$ meson form factors in the time--like region | 19 pages, 2 figures, to appear in Phys Rev C | Phys.Rev.C75:065202,2007 | 10.1103/PhysRevC.75.065202 | null | hep-ph | null | The electron positron annihilation reaction into four pion production has
been studied, through the channel $e^++e^-\to \bar \rho+\rho $. The
differential (and total) cross sections and various polarization observables
for this reaction have been calculated in terms of the electromagnetic form
factors of the corresponding $\gamma^*\rho\rho $ current. The elements of the
spin--density matrix of the $\rho -$meson were also calculated. Numerical
estimations have been done, with the help of phenomenological form factors
obtained in the space--like region of the momentum transfer squared and
analytically extended to the time-like region.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:58:00 GMT"
}
] | 2008-12-18T00:00:00 | [
[
"Adamuščín",
"C.",
""
],
[
"Gakh",
"G. I.",
""
],
[
"Tomasi-Gustafsson",
"E.",
""
]
] |
0706.1126 | Maret Einasto | M. Einasto, E. Saar, J. Einasto, E. Tago, L.J. Liivam"agi, V.J.
Martinez, J.-L. Starck, V. M"uller, P. Hein"am"aki, P. Nurmi, M. Gramann, G.
H"utsi | The richest superclusters. II. Galaxy populations | 11 pages, 6 figures, submitted to Astronomy and Astrophysics | null | null | null | astro-ph | null | We study the morphology of galaxy populations of the richest superclusters
from the catalogue of superclusters of galaxies in the 2dF Galaxy Redshift
Survey using the luminosity density distribution and Minkowski functional V3.
We compare the properties of grouped and isolated galaxies in regions of
different density in superclusters. We find that in high-density cores of rich
superclusters there is an excess of early type, passive galaxies, among
galaxies in groups and clusters, as well as among those which do not belong to
groups, while in lower density outer regions there are more blue, star-forming
galaxies both in groups and among those galaxies which do not belong to groups.
This also shows that the galaxy content of groups depends on the environment
where the groups reside in. The density distributions and the behaviour of the
Minkowski functional V3 for different superclusters show that substructures in
superclusters as traced by different populations of galaxies are very
different. Our results show that both local (group/cluster) and global
(supercluster) environments are important in forming galaxy morphologies and
star formation activity. The presence of a high density core with X-ray
clusters and a relatively small fraction of star-forming galaxies in the
supercluster SCL126 may be an indication that this supercluster has started its
evolution earlier than the supercluster SCL9.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 07:59:16 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Einasto",
"M.",
""
],
[
"Saar",
"E.",
""
],
[
"Einasto",
"J.",
""
],
[
"Tago",
"E.",
""
],
[
"Liivam\"agi",
"L. J.",
""
],
[
"Martinez",
"V. J.",
""
],
[
"Starck",
"J. -L.",
""
],
[
"M\"uller",
"V.",
""
],
[
"Hein\"am\"aki",
"P.",
""
],
[
"Nurmi",
"P.",
""
],
[
"Gramann",
"M.",
""
],
[
"H\"utsi",
"G.",
""
]
] |
0706.1127 | Matthias Brust R. | Matthias R. Brust, Christian M. Adriano, Ivan M.L. Ricarte | Redesigning Computer-based Learning Environments: Evaluation as
Communication | International Conference on Education and Information Systems (EISTA
04), ISBN 980-6560-11-6 | null | null | null | cs.CY cs.HC | null | In the field of evaluation research, computer scientists live constantly upon
dilemmas and conflicting theories. As evaluation is differently perceived and
modeled among educational areas, it is not difficult to become trapped in
dilemmas, which reflects an epistemological weakness. Additionally, designing
and developing a computer-based learning scenario is not an easy task.
Advancing further, with end-users probing the system in realistic settings, is
even harder. Computer science research in evaluation faces an immense
challenge, having to cope with contributions from several conflicting and
controversial research fields. We believe that deep changes must be made in our
field if we are to advance beyond the CBT (computer-based training) learning
model and to build an adequate epistemology for this challenge. The first task
is to relocate our field by building upon recent results from philosophy,
psychology, social sciences, and engineering. In this article we locate
evaluation in respect to communication studies. Evaluation presupposes a
definition of goals to be reached, and we suggest that it is, by many means, a
silent communication between teacher and student, peers, and institutional
entities. If we accept that evaluation can be viewed as set of invisible rules
known by nobody, but somehow understood by everybody, we should add
anthropological inquiries to our research toolkit. The paper is organized
around some elements of the social communication and how they convey new
insights to evaluation research for computer and related scientists. We found
some technical limitations and offer discussions on how we relate to technology
at same time we establish expectancies and perceive others work.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 08:12:21 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Brust",
"Matthias R.",
""
],
[
"Adriano",
"Christian M.",
""
],
[
"Ricarte",
"Ivan M. L.",
""
]
] |
0706.1128 | Tomoyuki Maruyama | Tomoyuki Maruyama, George F. Bertsch | Dipole Oscillations in Bose - Fermi Mixture in the Time-Dependent
Grosspitaevskii and Vlasov equations | 17 pages text, and 15 figures | null | 10.1103/PhysRevA.77.063611 | null | cond-mat.other astro-ph nucl-th | null | We study the dipole collective oscillations in the bose-fermi mixture using a
dynamical time-dependent approach, which are formulated with the time-dependent
Gross-Pitaevskii equation and the Vlasov equation. We find big difference in
behaviors of fermion oscillation between the time-dependent approach and usual
approaches such as the random-phase approximation and the sum-rule approach.
While the bose gas oscillates monotonously, the fermion oscillation shows a
beat and a damping. When the amplitude is not minimal, the dipole oscillation
of the fermi gas cannot be described with a simple center-of-mass motion.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 08:13:11 GMT"
},
{
"version": "v2",
"created": "Tue, 12 Jun 2007 07:20:03 GMT"
},
{
"version": "v3",
"created": "Wed, 17 Oct 2007 06:59:09 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Maruyama",
"Tomoyuki",
""
],
[
"Bertsch",
"George F.",
""
]
] |
0706.1129 | Diana Carina Hannikainen | D. C. Hannikainen (1), M. G. Rawlings (2), P. Muhli (1), O. Vilhu (1),
J. Schultz (1), J. Rodriguez (3) ((1) Observatory, University of Helsinki,
(2) Joint Astronomy Centre, (3) CEA Saclay) | The nature of the infrared counterpart of IGR J19140+0951 | 5 pages, 2 figures, accepted for publication in MNRAS | null | 10.1111/j.1365-2966.2007.12092.x | null | astro-ph | null | The INTEGRAL observatory has been (re-)discovering new X-ray sources since
the beginning of nominal operations in early 2003. These sources include X-ray
binaries, Active Galactic Nuclei, cataclysmic variables, etc. Amongst the X-ray
binaries, the true nature of many of these sources has remained largely
elusive, though they seem to make up a population of highly absorbed high-mass
X-ray binaries. One of these new sources, IGR J19140+0951, was serendipitously
discovered on 2003 Mar 6 during an observation of the galactic microquasar GRS
1915+105. We observed IGR J19140+0951 with UKIRT in order to identify the
infrared counterpart. Here we present the H- and K-band spectra. We determined
that the companion is a B0.5-type bright supergiant in a wind-fed system, at a
distance $\la$ 5 kpc.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 08:23:04 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Hannikainen",
"D. C.",
""
],
[
"Rawlings",
"M. G.",
""
],
[
"Muhli",
"P.",
""
],
[
"Vilhu",
"O.",
""
],
[
"Schultz",
"J.",
""
],
[
"Rodriguez",
"J.",
""
]
] |
0706.1130 | Matthias Brust R. | Matthias R. Brust, Steffen Rothkugel | A Communication Model for Adaptive Service Provisioning in Hybrid
Wireless Networks | WSEAS Transactions on Circuits and Systems 2004 | null | null | null | cs.NI cs.AR cs.CY cs.HC | null | Mobile entities with wireless links are able to form a mobile ad-hoc network.
Such an infrastructureless network does not have to be administrated. However,
self-organizing principles have to be applied to deal with upcoming problems,
e.g. information dissemination. These kinds of problems are not easy to tackle,
requiring complex algorithms. Moreover, the usefulness of pure ad-hoc networks
is arguably limited. Hence, enthusiasm for mobile ad-hoc networks, which could
eliminate the need for any fixed infrastructure, has been damped. The goal is
to overcome the limitations of pure ad-hoc networks by augmenting them with
instant Internet access, e.g. via integration of UMTS respectively GSM links.
However, this raises multiple questions at the technical as well as the
organizational level. Motivated by characteristics of small-world networks that
describe an efficient network even without central or organized design, this
paper proposes to combine mobile ad-hoc networks and infrastructured networks
to form hybrid wireless networks. One main objective is to investigate how this
approach can reduce the costs of a permanent backbone link and providing in the
same way the benefits of useful information from Internet connectivity or
service providers. For the purpose of bridging between the different types of
networks, an adequate middleware service is the focus of our investigation.
This paper shows our first steps forward to this middleware by introducing the
Injection Communication paradigm as principal concept.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 08:23:14 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Brust",
"Matthias R.",
""
],
[
"Rothkugel",
"Steffen",
""
]
] |
0706.1131 | Istvan Montvay | F. Farchioni, I. Montvay, G. M\"unster, E.E. Scholz, T. Sudmann, J.
Wuilloud | Hadron masses in QCD with one quark flavour | 21 pages, 4 figures; further references added | Eur.Phys.J.C52:305-314,2007 | 10.1140/epjc/s10052-007-0394-4 | DESY 07-078, MS-TP-07-14, BNL-HET-07/9 | hep-lat | null | One-flavour QCD - a gauge theory with SU(3) colour gauge group and a fermion
in the fundamental representation - is studied by Monte Carlo simulations. The
mass spectrum of hadronic bound states is investigated in a volume with
extensions of L ~ 4.4r_0 (~2.2fm) at two different lattice spacings: a ~
0.37r_0 (~0.19fm) and a ~ 0.27r_0 (~0.13fm). The lattice action is Symanzik
tree-level-improved Wilson action for the gauge field and (unimproved) Wilson
action for the fermion.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 08:33:04 GMT"
},
{
"version": "v2",
"created": "Sat, 16 Jun 2007 17:00:18 GMT"
},
{
"version": "v3",
"created": "Mon, 9 Jul 2007 10:59:16 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Farchioni",
"F.",
""
],
[
"Montvay",
"I.",
""
],
[
"Münster",
"G.",
""
],
[
"Scholz",
"E. E.",
""
],
[
"Sudmann",
"T.",
""
],
[
"Wuilloud",
"J.",
""
]
] |
0706.1132 | Masahiko Katsuma | M. Arnould and M. Katsuma | From the microcosm of the atomic nuclei to the macrocosm of the stars | 6 pages, To appear in Proceedings of International Conference on
Nuclear Data for Science and Technology 2007 (ND2007), Nice, France | null | null | null | astro-ph | null | A necessary condition for the reliable modelling of the structure or
evolution of the stars and of their concomitant nucleosynthesis is the
availability of good quality nuclear data in a very wide area of the chart of
nuclides. This short review presents a non-exhaustive list of nuclear data of
astrophysics interest (masses, $\beta$-decays, thermonuclear and
non-thermonuclear reaction rates) for nuclides at the bottom of the valley of
nuclear stability (mainly involved in the modelling of non-explosive phases of
stellar evolution), or for more or less highly exotic nuclides (to be
considered in the description of stellar explosions). Special emphasis is put
on the importance of providing quality nuclear data bases that can be easily
used by astrophysicists.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:53:38 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Arnould",
"M.",
""
],
[
"Katsuma",
"M.",
""
]
] |
0706.1133 | Nejc Ko\v{s}nik | Svjetlana Fajfer, Nejc Kosnik and Sasa Prelovsek | Updated constraints on new physics in rare charm decays | 15 pages, 4 figures | Phys.Rev.D76:074010,2007 | 10.1103/PhysRevD.76.074010 | null | hep-ph | null | Motivated by recent experimental results on charm physics we investigate
implications of the updated constraints of new physics in rare charm meson
decays. We first reconsider effects of the MSSM in $c\to u \gamma$ constrained
by the recent experimental evidence on $\Delta m_D$ and find, that due to the
dominance of long distance physics, $D \to V \gamma$ decay rates cannot be
modified by MSSM contributions. Then we consider effects of the extra heavy up
vector-like quark models on the decay spectrum of $D^+ \to \pi^+ l^+ l^-$ and
$D_s^+ \to K^+ l^+ l^-$ decays. We find a possibility for the tiny increase of
the differential decay rate in the region of large dilepton mass. The R-parity
violating supersymmetric model can also modify short distance dynamics in $c
\to u l^+ l^-$ decays. We constrain relevant parameters using current upper
bound on the $D^+ \to \pi^+ l^+ l^-$ decay rate and investigate impact of that
constraint on the $D_s^+ \to K^+ l^+ l^-$ differential decay dilepton
distribution. Present bounds still allow small modification of the standard
model differential decay rate distribution.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:01:01 GMT"
},
{
"version": "v2",
"created": "Sun, 10 Jun 2007 21:52:11 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Fajfer",
"Svjetlana",
""
],
[
"Kosnik",
"Nejc",
""
],
[
"Prelovsek",
"Sasa",
""
]
] |
0706.1134 | Alberto Imparato | A. Imparato, L. Peliti | Comment on: Failure of the work-Hamiltonian connection for free energy
calculations | null | null | null | null | cond-mat.stat-mech | null | We argue that the apparent failure of the work-Hamiltonian connection for
free energy calculations reported by Vilar and Rubi' (cond-mat
arXiv:0704.0761v2) stems from their incorrect expression for the work.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:00:46 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Imparato",
"A.",
""
],
[
"Peliti",
"L.",
""
]
] |
0706.1135 | Sayan Kar | Sayan Kar and Rajesh R. Parwani | Can degenerate bound states occur in one dimensional quantum mechanics? | 10 pages, 2 figures, to appear in Europhysics Letters | null | 10.1209/0295-5075/80/30004 | null | quant-ph cond-mat.mes-hall hep-th | null | We point out that bound states, degenerate in energy but differing in parity,
may form in one dimensional quantum systems even if the potential is
non-singular in any finite domain. Such potentials are necessarily unbounded
from below at infinity and occur in several different contexts, such as in the
study of localised states in brane-world scenarios. We describe how to
construct large classes of such potentials and give explicit analytic
expressions for the degenerate bound states. Some of these bound states occur
above the potential maximum while some are below. Various unusual features of
the bound states are described and after highlighting those that are ansatz
independent, we suggest that it might be possible to observe such parity-paired
degenerate bound states in specific mesoscopic systems.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:08:36 GMT"
},
{
"version": "v2",
"created": "Mon, 17 Sep 2007 10:08:48 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Kar",
"Sayan",
""
],
[
"Parwani",
"Rajesh R.",
""
]
] |
0706.1136 | Patrick Van Esch | Patrick Van Esch | Multiple hits in wire chambers and other particle detectors | 15 pages, 4 figures | JINST2:P09004,2007 | 10.1088/1748-0221/2/09/P09004 | null | physics.ins-det | null | We propose an analysis of the dead time losses in counting imaging detectors
such as MWPC which can resolve $k$ simultaneous hits, and analyze in more
detail an $X-Y$ detector which has a third wire set which allows for the
recognition of simultaneous impacts.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:09:50 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Van Esch",
"Patrick",
""
]
] |
0706.1137 | Thierry Poibeau | Amanda Bouffier (LIPN), Thierry Poibeau (LIPN) | Automatically Restructuring Practice Guidelines using the GEM DTD | null | Proceedings of Biomedical Natural Language Processing (BioNLP)
(2007) - | null | null | cs.AI | null | This paper describes a system capable of semi-automatically filling an XML
template from free texts in the clinical domain (practice guidelines). The XML
template includes semantic information not explicitly encoded in the text
(pairs of conditions and actions/recommendations). Therefore, there is a need
to compute the exact scope of conditions over text sequences expressing the
required actions. We present a system developed for this task. We show that it
yields good performance when applied to the analysis of French practice
guidelines.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:39:49 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Bouffier",
"Amanda",
"",
"LIPN"
],
[
"Poibeau",
"Thierry",
"",
"LIPN"
]
] |
0706.1138 | Susumu Oda | Susumu Oda | Some Comments around The Examples against The Generalized Jacobian
Conjecture | 23 pages, I changed some notations in a few places. Any opinions are
welcome | null | null | null | math.AC math.AG | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | We have studied a faded problem, the Jacobian Conjecture ~:
\noindent
{\sf The Jacobian Conjecture $(JC_n)$}~:
If $f_1, \cdots, f_n$ are elements in a polynomial ring $k[X_1, \cdots, X_n]$
over a field $k$ of characteristic $0$ such that the Jacobian $\det(\partial
f_i/ \partial X_j) $ is a nonzero constant, then $k[f_1, \cdots, f_n] = k[X_1,
\cdots, X_n]$.
For this purpose, we generalize it to the following form~:
\noindent
{\sf The Generalized Jacobian Conjecture $(GJC)$}~:
{\it Let $\varphi : S \rightarrow T$ be an unramified homomorphism of
Noetherian domains with $T^\times = \varphi(S^\times)$. Assume that $T$ is a
factorial domain and that $S$ is a simply connected normal domain. Then
$\varphi$ is an isomorphism. }
For the consistency of our discussion, we raise some serious (or idiot)
questions and some comments concerning the examples appeared in the papers
published by the certain excellent mathematicians (though we are unwilling to
deal with them). Since the existence of such examples would be against our
original target Conjecture$(GJC)$, we have to dispute their arguments about the
existence of their respective (so called) counter-examples. Our conclusion is
that they are not perfect counter-examples as are shown explicitly.
| [
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"created": "Fri, 27 Jul 2007 09:05:41 GMT"
},
{
"version": "v14",
"created": "Sat, 28 Jul 2007 08:36:03 GMT"
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"version": "v15",
"created": "Tue, 7 Aug 2007 08:10:19 GMT"
},
{
"version": "v16",
"created": "Thu, 9 Aug 2007 09:13:32 GMT"
},
{
"version": "v17",
"created": "Sun, 12 Aug 2007 01:47:32 GMT"
},
{
"version": "v18",
"created": "Mon, 20 Aug 2007 01:11:52 GMT"
},
{
"version": "v19",
"created": "Wed, 22 Aug 2007 07:28:21 GMT"
},
{
"version": "v2",
"created": "Sun, 10 Jun 2007 22:10:31 GMT"
},
{
"version": "v20",
"created": "Mon, 27 Aug 2007 08:11:39 GMT"
},
{
"version": "v21",
"created": "Tue, 11 Dec 2007 08:14:57 GMT"
},
{
"version": "v22",
"created": "Tue, 8 Jul 2008 07:52:29 GMT"
},
{
"version": "v23",
"created": "Tue, 22 Jul 2008 09:03:19 GMT"
},
{
"version": "v24",
"created": "Mon, 4 Aug 2008 10:04:12 GMT"
},
{
"version": "v25",
"created": "Thu, 7 Aug 2008 06:37:40 GMT"
},
{
"version": "v26",
"created": "Tue, 19 Aug 2008 01:51:06 GMT"
},
{
"version": "v27",
"created": "Thu, 28 Aug 2008 06:00:49 GMT"
},
{
"version": "v28",
"created": "Sat, 6 Sep 2008 07:12:36 GMT"
},
{
"version": "v29",
"created": "Sat, 25 Oct 2008 02:57:41 GMT"
},
{
"version": "v3",
"created": "Tue, 12 Jun 2007 16:41:41 GMT"
},
{
"version": "v30",
"created": "Sat, 1 Nov 2008 08:14:25 GMT"
},
{
"version": "v31",
"created": "Thu, 20 Nov 2008 09:25:45 GMT"
},
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"version": "v32",
"created": "Sat, 27 Dec 2008 01:17:06 GMT"
},
{
"version": "v33",
"created": "Wed, 14 Jan 2009 09:39:36 GMT"
},
{
"version": "v34",
"created": "Fri, 8 May 2009 07:25:50 GMT"
},
{
"version": "v35",
"created": "Wed, 26 Aug 2009 08:28:09 GMT"
},
{
"version": "v36",
"created": "Sun, 27 Sep 2009 09:04:03 GMT"
},
{
"version": "v37",
"created": "Wed, 30 Sep 2009 23:51:47 GMT"
},
{
"version": "v38",
"created": "Sat, 17 Oct 2009 00:37:47 GMT"
},
{
"version": "v39",
"created": "Wed, 4 Nov 2009 08:22:13 GMT"
},
{
"version": "v4",
"created": "Mon, 18 Jun 2007 07:30:06 GMT"
},
{
"version": "v40",
"created": "Thu, 24 Dec 2009 00:36:19 GMT"
},
{
"version": "v41",
"created": "Mon, 8 Mar 2010 08:29:10 GMT"
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{
"version": "v42",
"created": "Thu, 17 Jun 2010 01:33:19 GMT"
},
{
"version": "v43",
"created": "Tue, 7 Sep 2010 04:10:41 GMT"
},
{
"version": "v44",
"created": "Sun, 26 Sep 2010 13:39:16 GMT"
},
{
"version": "v45",
"created": "Thu, 21 Oct 2010 09:22:21 GMT"
},
{
"version": "v46",
"created": "Wed, 8 Dec 2010 01:31:59 GMT"
},
{
"version": "v47",
"created": "Tue, 4 Jan 2011 23:56:01 GMT"
},
{
"version": "v48",
"created": "Mon, 20 Jun 2011 06:43:11 GMT"
},
{
"version": "v49",
"created": "Wed, 7 Sep 2011 04:20:44 GMT"
},
{
"version": "v5",
"created": "Thu, 21 Jun 2007 01:02:45 GMT"
},
{
"version": "v50",
"created": "Wed, 21 Mar 2012 01:54:19 GMT"
},
{
"version": "v51",
"created": "Mon, 16 Apr 2012 22:59:57 GMT"
},
{
"version": "v52",
"created": "Fri, 21 Dec 2012 23:56:07 GMT"
},
{
"version": "v53",
"created": "Thu, 27 Dec 2012 08:02:10 GMT"
},
{
"version": "v54",
"created": "Tue, 9 Apr 2013 00:59:04 GMT"
},
{
"version": "v55",
"created": "Fri, 10 May 2013 00:47:48 GMT"
},
{
"version": "v56",
"created": "Tue, 21 May 2013 06:30:21 GMT"
},
{
"version": "v57",
"created": "Fri, 31 May 2013 11:21:23 GMT"
},
{
"version": "v58",
"created": "Mon, 10 Jun 2013 04:33:06 GMT"
},
{
"version": "v59",
"created": "Tue, 29 Oct 2013 03:16:55 GMT"
},
{
"version": "v6",
"created": "Fri, 22 Jun 2007 01:37:41 GMT"
},
{
"version": "v60",
"created": "Fri, 1 Nov 2013 04:06:14 GMT"
},
{
"version": "v61",
"created": "Mon, 16 Dec 2013 00:41:29 GMT"
},
{
"version": "v62",
"created": "Mon, 27 Jan 2014 05:06:09 GMT"
},
{
"version": "v63",
"created": "Tue, 11 Feb 2014 03:13:36 GMT"
},
{
"version": "v64",
"created": "Sun, 27 Apr 2014 11:19:34 GMT"
},
{
"version": "v65",
"created": "Mon, 30 Jun 2014 11:59:46 GMT"
},
{
"version": "v66",
"created": "Fri, 31 Oct 2014 02:17:34 GMT"
},
{
"version": "v67",
"created": "Fri, 14 Nov 2014 05:28:45 GMT"
},
{
"version": "v68",
"created": "Tue, 9 Dec 2014 02:07:03 GMT"
},
{
"version": "v69",
"created": "Thu, 11 Dec 2014 02:27:35 GMT"
},
{
"version": "v7",
"created": "Mon, 25 Jun 2007 08:15:46 GMT"
},
{
"version": "v70",
"created": "Wed, 7 Jan 2015 05:14:03 GMT"
},
{
"version": "v71",
"created": "Mon, 2 Mar 2015 00:51:03 GMT"
},
{
"version": "v72",
"created": "Tue, 24 Nov 2015 06:51:37 GMT"
},
{
"version": "v73",
"created": "Sat, 5 Dec 2015 15:40:45 GMT"
},
{
"version": "v74",
"created": "Mon, 28 Dec 2015 03:07:00 GMT"
},
{
"version": "v75",
"created": "Fri, 15 Jan 2016 04:11:42 GMT"
},
{
"version": "v76",
"created": "Sat, 30 Jan 2016 02:55:17 GMT"
},
{
"version": "v77",
"created": "Sun, 25 Dec 2016 09:58:22 GMT"
},
{
"version": "v78",
"created": "Fri, 3 Feb 2017 16:07:26 GMT"
},
{
"version": "v79",
"created": "Wed, 17 May 2017 01:38:34 GMT"
},
{
"version": "v8",
"created": "Wed, 27 Jun 2007 08:09:42 GMT"
},
{
"version": "v80",
"created": "Thu, 22 Jun 2017 03:02:50 GMT"
},
{
"version": "v81",
"created": "Thu, 6 Dec 2018 11:57:49 GMT"
},
{
"version": "v82",
"created": "Fri, 22 Feb 2019 02:25:37 GMT"
},
{
"version": "v83",
"created": "Thu, 25 Apr 2019 14:55:08 GMT"
},
{
"version": "v84",
"created": "Thu, 20 Jun 2019 10:13:56 GMT"
},
{
"version": "v85",
"created": "Fri, 13 Dec 2019 09:11:07 GMT"
},
{
"version": "v86",
"created": "Thu, 2 Jan 2020 09:27:54 GMT"
},
{
"version": "v87",
"created": "Sat, 1 Feb 2020 23:35:51 GMT"
},
{
"version": "v88",
"created": "Sun, 1 Mar 2020 01:31:21 GMT"
},
{
"version": "v89",
"created": "Tue, 7 Apr 2020 17:47:12 GMT"
},
{
"version": "v9",
"created": "Tue, 3 Jul 2007 06:58:22 GMT"
},
{
"version": "v90",
"created": "Sat, 9 May 2020 09:11:27 GMT"
},
{
"version": "v91",
"created": "Tue, 9 Jun 2020 12:28:09 GMT"
},
{
"version": "v92",
"created": "Wed, 1 Jul 2020 16:56:46 GMT"
},
{
"version": "v93",
"created": "Fri, 7 Aug 2020 07:44:07 GMT"
},
{
"version": "v94",
"created": "Sat, 19 Sep 2020 06:50:19 GMT"
},
{
"version": "v95",
"created": "Thu, 12 May 2022 09:54:06 GMT"
},
{
"version": "v96",
"created": "Mon, 6 Jun 2022 09:00:41 GMT"
},
{
"version": "v97",
"created": "Mon, 20 Jun 2022 13:47:52 GMT"
},
{
"version": "v98",
"created": "Thu, 8 Sep 2022 02:40:15 GMT"
},
{
"version": "v99",
"created": "Wed, 30 Nov 2022 12:55:41 GMT"
}
] | 2022-12-01T00:00:00 | [
[
"Oda",
"Susumu",
""
]
] |
0706.1139 | Armando Perez | A. Perez and A. Romanelli | Non adiabatic quantum search algorithms | 7 pages, 5 figures | null | 10.1103/PhysRevA.76.052318 | null | quant-ph | null | We present two new continuous time quantum search algorithms similar to the
adiabatic search algorithm, but now without an adiabatic evolution. We find
that both algorithms work for a wide range of values of the parameters of the
Hamiltonian, and one of them has, as an additional feature that, for values of
time larger than a characteristic one, it will converge to a state which can be
close to the searched state.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:23:49 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Perez",
"A.",
""
],
[
"Romanelli",
"A.",
""
]
] |
0706.1140 | Fiore De Luise | F. De Luise, D. Perna, E. Dotto, S. Fornasier, I. N. Belskaya, A.
Boattini, G.B. Valsecchi, A. Milani, A. Rossi, M. Lazzarin, P. Paolicchi, M.
Fulchignoni | Physical Investigation of the Potentially Hazardous Asteroid (144898)
2004 VD17 | 32 pages, 7 figure, paper accepted for publication in Icarus | null | 10.1016/j.icarus.2007.05.018 | null | astro-ph | null | In this paper we present the observational campaign carried out at ESO NTT
and VLT in April and May 2006 to investigate the nature and the structure of
the Near Earth Object (144898) 2004 VD17. In spite of a great quantity of
dynamical information, according to which it will have a close approach with
the Earth in the next century, the physical properties of this asteroid are
largely unknown. We performed visible and near--infrared photometry and
spectroscopy, as well as polarimetric observations. Polarimetric and
spectroscopic data allowed us to classify 2004 VD17 as an E-type asteroid. A
good agreement was also found with the spectrum of the aubrite meteorite Mayo
Belwa. On the basis of the polarimetric albedo (p_v=0.45) and of photometric
data, we estimated a diameter of about 320 m and a rotational period of about 2
hours. The analysis of the results obtained by our complete survey have shown
that (144898) 2004 VD17 is a peculiar NEO, since it is close to the breakup
limits for fast rotator asteroids, as defined by Pravec and Harris (2000).
These results suggest that a more robust structure must be expected, as a
fractured monolith or a rubble pile in a "strength regime" (Holsapple 2002).
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:25:59 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"De Luise",
"F.",
""
],
[
"Perna",
"D.",
""
],
[
"Dotto",
"E.",
""
],
[
"Fornasier",
"S.",
""
],
[
"Belskaya",
"I. N.",
""
],
[
"Boattini",
"A.",
""
],
[
"Valsecchi",
"G. B.",
""
],
[
"Milani",
"A.",
""
],
[
"Rossi",
"A.",
""
],
[
"Lazzarin",
"M.",
""
],
[
"Paolicchi",
"P.",
""
],
[
"Fulchignoni",
"M.",
""
]
] |
0706.1141 | Matthias Brust R. | Adrian Andronache, Matthias R. Brust, Steffen Rothkugel | Multimedia Content Distribution in Hybrid Wireless Networks using
Weighted Clustering | 2nd ACM Workshop on Wireless Multimedia Networking and Performance
Modeling 2006 (ISBN 1-59593-485) | null | null | null | cs.MM cs.NI | null | Fixed infrastructured networks naturally support centralized approaches for
group management and information provisioning. Contrary to infrastructured
networks, in multi-hop ad-hoc networks each node acts as a router as well as
sender and receiver. Some applications, however, requires hierarchical
arrangements that-for practical reasons-has to be done locally and
self-organized. An additional challenge is to deal with mobility that causes
permanent network partitioning and re-organizations. Technically, these
problems can be tackled by providing additional uplinks to a backbone network,
which can be used to access resources in the Internet as well as to inter-link
multiple ad-hoc network partitions, creating a hybrid wireless network. In this
paper, we present a prototypically implemented hybrid wireless network system
optimized for multimedia content distribution. To efficiently manage the ad-hoc
communicating devices a weighted clustering algorithm is introduced. The
proposed localized algorithm deals with mobility, but does not require
geographical information or distances.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:31:46 GMT"
}
] | 2012-01-16T00:00:00 | [
[
"Andronache",
"Adrian",
""
],
[
"Brust",
"Matthias R.",
""
],
[
"Rothkugel",
"Steffen",
""
]
] |
0706.1142 | Matthias Brust R. | Matthias R. Brust, Steffen Rothkugel | Localized Support for Injection Point Election in Hybrid Networks | The Sixth International Conference on Networking (ICN 2007) | null | null | null | cs.DC cs.NI | null | Ad-hoc networks, a promising trend in wireless technology, fail to work
properly in a global setting. In most cases, self-organization and cost-free
local communication cannot compensate the need for being connected, gathering
urgent information just-in-time. Equipping mobile devices additionally with GSM
or UMTS adapters in order to communicate with arbitrary remote devices or even
a fixed network infrastructure provides an opportunity. Devices that operate as
intermediate nodes between the ad-hoc network and a reliable backbone network
are potential injection points. They allow disseminating received information
within the local neighborhood. The effectiveness of different devices to serve
as injection point differs substantially. For practical reasons the
determination of injection points should be done locally, within the ad-hoc
network partitions. We analyze different localized algorithms using at most
2-hop neighboring information. Results show that devices selected this way
spread information more efficiently through the ad-hoc network. Our results can
also be applied in order to support the election process for clusterheads in
the field of clustering mechanisms.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:36:41 GMT"
}
] | 2007-06-12T00:00:00 | [
[
"Brust",
"Matthias R.",
""
],
[
"Rothkugel",
"Steffen",
""
]
] |
0706.1143 | Amitabha Lahiri | Saikat Chatterjee, Amitabha Lahiri and Ambar N. Sengupta | Negative forms and path space forms | 12 pp.; the Introduction has been rewritten and mention of cohomology
dropped in Proposition 3.2; material slightly reorganized | Int.J.Geom.Meth.Mod.Phys.5:573-586,2008 | 10.1142/S0219887808002953 | null | math-ph hep-th math.MP | null | We present an account of negative differential forms within a natural
algebraic framework of differential graded algebras, and explain their
relationship with forms on path spaces.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:43:43 GMT"
},
{
"version": "v2",
"created": "Fri, 30 Nov 2007 07:25:31 GMT"
}
] | 2010-11-11T00:00:00 | [
[
"Chatterjee",
"Saikat",
""
],
[
"Lahiri",
"Amitabha",
""
],
[
"Sengupta",
"Ambar N.",
""
]
] |
0706.1144 | Gunnar Pruessner | Gunnar Pruessner | Block scaling in the directed percolation universality class | 14 pages, 5 figures, IOP style | null | 10.1088/1367-2630/10/11/113003 | null | cond-mat.stat-mech | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | The universal behaviour of the directed percolation universality class is
well understood, both the critical scaling as well as finite size scaling. This
article focuses on the block (finite size) scaling of the order parameter and
its fluctuations, considering (sub-)blocks of linear size l in systems of
linear size L. The scaling depends on the choice of the ensemble, as only the
conditional ensemble produces the block-scaling behaviour as established in
equilibrium critical phenomena. The dependence on the ensemble can be
understood by an additional symmetry present in the unconditional ensemble. The
unconventional scaling found in the unconditional ensemble is a reminder of the
possibility that scaling functions themselves have a power-law dependence on
their arguments.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:45:49 GMT"
},
{
"version": "v2",
"created": "Fri, 19 Sep 2008 20:42:09 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Pruessner",
"Gunnar",
""
]
] |
0706.1145 | Ana Monreal-Ibero | A. Monreal-Ibero (1), L. Colina (2), S. Arribas (2), M. Garcia-Marin
(2) ((1) Astrophysikalisches Institut Potsdam, (2) Instituto de Estructura de
la Materia (CSIC)) | Search for Tidal Dwarf Galaxies Candidates in a Sample of Ultraluminous
Infrared Galaxies | 14 pages, 7 figures; A&A accepted | null | 10.1051/0004-6361:20066760 | null | astro-ph | null | (ABRIDGED) Star-forming small galaxies made out of collisional debris have
been found in a variety of merging systems. So far only a few of them are known
in ULIRGs although they show clear signs of interactions. Whether external star
formation may take place in such objects is an open question. The aim of this
paper is to identify and characterise the physical and kinematic properties of
the external star forming regions in a sample of ULIRGs, including TDG
candidates, using optical IFS and high angular resolution HST imaging. We have
found that the presence of external star-forming regions is common with 12
objects being identified in 5 ULIRGs. These regions show a large range of
dynamical mass up to 1x10^{10} M_sun, with average sizes of ~750 pc. In
addition, the line ratios, metallicities and H\alpha equivalent widths are
typical of young bursts of star formation (age ~ 5-8 Myr), and similar to those
of other TDG candidates. Their extinction corrected H\alpha luminosities lead
to masses for the young stellar component of ~2x10^6 - 7x10^8 M_sun. The
likelihood of survival of these regions as TDGs is discussed based on their
structural and kinematic properties. Most of these systems follow the relation
between effective radius and velocity dispersion found for globular clusters
and Ellipticals, which suggests they are stable against internal motions. The
stability against forces from the parent galaxy have been studied and a
comparison of the data with the predictions of dynamical evolutionary models is
also performed. Five regions out of twelve show High-Medium or High likelihood
of survival. Our best candidate, which satisfy all the utilized criteria, is
located in the advanced merger IRAS15250+3609 and presents a velocity field
decoupled from the relatively distant parent galaxy.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:54:34 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Monreal-Ibero",
"A.",
""
],
[
"Colina",
"L.",
""
],
[
"Arribas",
"S.",
""
],
[
"Garcia-Marin",
"M.",
""
]
] |
0706.1146 | Salvatore Capozziello | Salvatore Capozziello, Mauro Francaviglia | Extended Theories of Gravity and their Cosmological and Astrophysical
Applications | 44 pages, 11 figures | Gen.Rel.Grav.40:357-420,2008 | 10.1007/s10714-007-0551-y | null | astro-ph gr-qc | null | We review Extended Theories of Gravity in metric and Palatini formalism
pointing out their cosmological and astrophysical application. The aim is to
propose an alternative approach to solve the puzzles connected to dark
components.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 09:59:25 GMT"
},
{
"version": "v2",
"created": "Mon, 16 Jul 2007 15:29:42 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Capozziello",
"Salvatore",
""
],
[
"Francaviglia",
"Mauro",
""
]
] |
0706.1147 | Razvan-Gheorghe Gurau | R. Gurau and A.Tanasa | Dimensional regularization and renormalization of non-commutative QFT | 31 pages, 8 figures | Annales Henri Poincare 9:655-683,2008 | 10.1007/s00023-008-0363-y | null | math-ph hep-th math.MP | null | Using the recently introduced parametric representation of non-commutative
quantum field theory, we implement here the dimensional regularization and
renormalization of the vulcanized $\Phi^{\star 4}_4$ model on the Moyal space.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:02:00 GMT"
}
] | 2019-08-19T00:00:00 | [
[
"Gurau",
"R.",
""
],
[
"Tanasa",
"A.",
""
]
] |
0706.1148 | Pawe{\l} Machnikowski | P. Machnikowski | Coherent control and decoherence of charge states in quantum dots | An introductory review chapter to appear in a book published by World
Scientific | null | 10.1142/9789812709455_0004 | null | cond-mat.mes-hall | null | This Chapter contains a review of the recent results, both experimental and
theoretical, related to optical control of carriers confined in semiconductor
quantum dots. The physics of Rabi oscillations of exciton and biexciton
occupations, as well as time-domain interference experiments are discussed.
Next, the impact of carrier--phonon interaction in a semiconductor structure is
described and modern methods of theoretical description of the carrier--phonon
kinetics and of the resulting dephasing are presented.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:05:50 GMT"
}
] | 2016-11-23T00:00:00 | [
[
"Machnikowski",
"P.",
""
]
] |
0706.1149 | Megan Argo | M.K. Argo, A. Pedlar, R.J. Beswick and T.W.B. Muxlow (Jodrell Bank
Observatory) | OH main line masers in the M82 starburst | MNRAS accepted. 16 pages, 13 figures | null | 10.1111/j.1365-2966.2007.12088.x | null | astro-ph | null | A study of the distribution of OH gas in the central region of the nearby
active starburst galaxy M82 has confirmed two previously known bright masers
and revealed several new main line masers. Three of these are seen only at 1665
MHz, one is detected only at 1667 MHz, while the rest are detected in both
lines. Observations covering both the 1665 and 1667 MHz lines, conducted with
both the Very Large Array (VLA) and the Multi-Element Radio Linked
Interferometer Network (MERLIN), have been used to accurately measure the
positions and velocities of these features. This has allowed a comparison with
catalogued continuum features in the starburst such as HII regions and
supernova remnants, as well as known water and satellite line OH masers. Most
of the main line masers appear to be associated with known HII regions although
the two detected only at 1665 MHz are seen along the same line of sight as
known supernova remnants.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:47:45 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Argo",
"M. K.",
"",
"Jodrell Bank\n Observatory"
],
[
"Pedlar",
"A.",
"",
"Jodrell Bank\n Observatory"
],
[
"Beswick",
"R. J.",
"",
"Jodrell Bank\n Observatory"
],
[
"Muxlow",
"T. W. B.",
"",
"Jodrell Bank\n Observatory"
]
] |
0706.1150 | Yeo Woong Yoon | C.S. Kim, Sechul Oh, Chandradew Sharma, Rahul Sinha, Yeo Woong Yoon | Generalized analysis on $B\to K^* \rho$ within and beyond the Standard
Model $-$ Can it help understand the $B \to K \pi$ puzzle? | 25 pages, 2 figures | Phys.Rev.D76:074019,2007 | 10.1103/PhysRevD.76.074019 | IMSc/2006/12/27 | hep-ph | null | We study $B \to K^* \rho$ modes that are analogues of the much studied $B\to
K \pi$ modes with B decaying to two vector mesons instead of pseudoscalar
mesons, using topological amplitudes in the quark diagram approach. We show how
$B \to K^*\rho$ modes can be used to obtain many more observables than those
for $B \to K \pi$ modes, even though the quark level subprocesses of both modes
are exactly the same. All the theoretical parameters (except for the weak phase
$\gamma$), such as the magnitudes of the topological amplitudes and their
strong phases, can be determined in terms of the observables without any
model-dependent assumption. We demonstrate how $B\to K^*\rho$ can also be used
to verify if there exist any relations between theoretical parameters, such as
the hierarchy relations between the topological amplitudes and possible
relations between the strong phases. Conversely, if there exist reliable
theoretical estimates of amplitudes and strong phases, the presence of New
physics could be probed. We show that if the tree and color-supressed tree are
related to the electroweak penguins and color-supressed electroweak penguins,
it is not only possible to verify the validity of such relations but also to
have a clean measurement of New Physics parameters. We also present a numerical
study to examine which of the observables are more sensitive to New Physics.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:11:31 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Kim",
"C. S.",
""
],
[
"Oh",
"Sechul",
""
],
[
"Sharma",
"Chandradew",
""
],
[
"Sinha",
"Rahul",
""
],
[
"Yoon",
"Yeo Woong",
""
]
] |
0706.1151 | Matthias Brust R. | Matthias R. Brust, Steffen Rothkugel | A taxonomic Approach to Topology Control in Ad-hoc and Wireless Networks | The Sixth International Conference on Networking, ICN 2007 | null | null | null | cs.NI cs.DC | null | Topology Control (TC) aims at tuning the topology of highly dynamic networks
to provide better control over network resources and to increase the efficiency
of communication. Recently, many TC protocols have been proposed. The protocols
are designed for preserving connectivity, minimizing energy consumption,
maximizing the overall network coverage or network capacity. Each TC protocol
makes different assumptions about the network topology, environment detection
resources, and control capacities. This circumstance makes it extremely
difficult to comprehend the role and purpose of each protocol. To tackle this
situation, a taxonomy for TC protocols is presented throughout this paper.
Additionally, some TC protocols are classified based upon this taxonomy.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:20:29 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Brust",
"Matthias R.",
""
],
[
"Rothkugel",
"Steffen",
""
]
] |
0706.1152 | Javier Hernandez-Rojas | B.S. Gonzalez, J. Hernandez-Rojas, J. Breton, and J.M.Gomez Llorente | Global Potential Energy Minima of (H$_{2}$O)$_{n}$ Clusters on Graphite | null | J. Phys. Chem. C 111, 14862 (2007) | null | null | physics.atm-clus | null | Likely candidates for the global potential energy minima of (H$_{2}$O)$_{n}$
clusters with $n\leq21$ on the (0001)-surface of graphite are found using
basin-hopping global optimization. The potential energy surfaces are
constructed using the TIP4P intermolecular potentials for the water molecules
(the TIP3P is also explored as a secondary choice), a Lennard-Jones
water-graphite potential, and a water-graphite polarization potential that is
built from classical electrostatic image methods and takes into account both
the perpendicular and parallel electric polarizations of graphite. This
potential energy surface produces a rather hydrophobic water-graphite
interaction. As a consequence, the water component of the lowest
graphite-(H$_{2}$O)$_{n}$ minima is quite closely related to low-lying minima
of the corresponding TIP4P (H$_{2}$O)$_{n}$ clusters. In about half of the
cases the geometrical substructure of the water molecules in the
graphite-(H$_{2}$O)$_{n}$ global minimum coincides with that of the
corresponding free water cluster. Exceptions occur when the interaction with
graphite induces a change in geometry. A comparison of our results with
available theoretical and experimental data is performed.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:25:21 GMT"
}
] | 2007-10-10T00:00:00 | [
[
"Gonzalez",
"B. S.",
""
],
[
"Hernandez-Rojas",
"J.",
""
],
[
"Breton",
"J.",
""
],
[
"Llorente",
"J. M. Gomez",
""
]
] |
0706.1153 | Hiroaki Kohyama | Hiroaki Kohyama | Phase diagram of quark-antiquark and diquark condensates at finite
temperature and density in the 3-dimensional Gross Neveu model | 15 pages, 3 figures; changed content | Phys.Rev.D77:045016,2008 | 10.1103/PhysRevD.77.045016 | OCU-PHYS 269 | hep-ph | null | We construct the phase diagrams of the quark-antiquark and diquark
condensates at finite temperature and density in the 3D (dimensional) 2-flavor
Gross Neveu model. We found that, in contrast to the case of the 4D Nambu
Jona-Lasinio model, there is no region where the quark-antiquark and diquark
condensates coexist. The phase diagrams obtained for some parameter region show
similar structure with the 4D QCD phase diagram.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:20:48 GMT"
},
{
"version": "v2",
"created": "Wed, 12 Sep 2007 04:59:19 GMT"
},
{
"version": "v3",
"created": "Wed, 9 Jan 2008 07:10:58 GMT"
},
{
"version": "v4",
"created": "Wed, 30 Apr 2008 21:56:48 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Kohyama",
"Hiroaki",
""
]
] |
0706.1154 | Debbarh Mohammed | Mohammed Debbarh and Bertrand Maillot | Additive Regression Model for Continuous Time Processes | 19 pages | null | null | null | math.ST math.PR stat.AP stat.TH | null | In the setting of additive regression model for continuous time process, we
establish the optimal uniform convergence rates and optimal asymptotic
quadratic error of additive regression. To build our estimate, we use the
marginal integration method.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:34:05 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Debbarh",
"Mohammed",
""
],
[
"Maillot",
"Bertrand",
""
]
] |
0706.1155 | Svitlana Zhukovska | Svitlana Zhukovska, Hans-Peter Gail, Mario Trieloff | Evolution of interstellar dust and stardust in the solar neighbourhood | 29 pages, 19 figures | null | 10.1051/0004-6361:20077789 | null | astro-ph | null | The abundance evolution of interstellar dust species originating from stellar
sources and from condensation in molecular clouds in the local interstellar
medium of the Milky Way is studied and the input of dust material to the Solar
System is determined. A one-zone chemical evolution model of the Milky Way for
the elemental composition of the disk combined with an evolution model for its
interstellar dust component similar to that of Dwek (1998) is developed. The
dust model considers dust-mass return from AGB stars as calculated from
synthetic AGB models combined with models for dust condensation in stellar
outflows. Supernova dust formation is included in a simple parameterized form
which is gauged by observed abundances of presolar dust grains with supernova
origin. For dust growth in the ISM a simple method is developed for coupling
this with disk and dust evolution models. The time evolution of the abundance
of the following dust species is followed in the model: silicate, carbon,
silicon carbide, and iron dust from AGB stars and from SNe as well as silicate,
carbon, and iron dust grown in molecular clouds. It is shown that the
interstellar dust population is dominated by dust accreted in molecular clouds;
most of the dust material entering the Solar System at its formation does not
show isotopic abundance anomalies of the refractory elements, i.e.,
inconspicuous isotopic abundances do not point to a Solar System origin of dust
grains. The observed abundance ratios of presolar dust grains formed in SN
ejecta and in AGB star outflows requires that for the ejecta from SNe the
fraction of refractory elements condensed into dust is 0.15 for carbon dust and
is quite small ($\sim10^{-4}$) for other dust species.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 10:37:07 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Zhukovska",
"Svitlana",
""
],
[
"Gail",
"Hans-Peter",
""
],
[
"Trieloff",
"Mario",
""
]
] |
0706.1156 | Matjaz Zemljic | M. M. Zemljic, P. Prelovsek and T. Tohyama | Temperature and doping dependence of high-energy kink in cuprates | 4 pages, 4 figures | Phys. Rev. Lett. 100, 036402 (2008) | 10.1103/PhysRevLett.100.036402 | null | cond-mat.str-el | null | It is shown that spectral functions within the extended t-J model, evaluated
using the finite-temperature diagonalization of small clusters, exhibit the
high-energy kink in single-particle dispersion consistent with recent
angle-resolved photoemission results on hole-doped cuprates. The kink and
waterfall-like features persist up to large doping and to temperatures beyond
$J$ hence the origin can be generally attributed to strong correlations and
incoherent hole propagation at large binding energies. In contrast, our
analysis predicts that electron-doped cuprates do not exhibit these phenomena
in photoemission.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:06:10 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Zemljic",
"M. M.",
""
],
[
"Prelovsek",
"P.",
""
],
[
"Tohyama",
"T.",
""
]
] |
0706.1157 | Albert V. Minkevich | A. V. Minkevich, A. S. Garkun and V. I. Kudin | Regular accelerating Universe without dark energy | 15 pages, 16 figures, iopart class file, some additions made | Class.Quant.Grav.24:5835-5848,2007 | 10.1088/0264-9381/24/23/007 | null | gr-qc | null | Homogeneous isotropic cosmological models with two torsion functions filled
with scalar fields and usual gravitating matter are built and investigated in
the framework of the Poincar\'e gauge theory of gravity. It is shown that by
certain restrictions on indefinite parameters of gravitational Lagrangian the
cosmological equations at asymptotics contain an effective cosmological
constant that can explain observable acceleration of cosmological expansion.
The behavior of inflationary cosmological solutions at extremely high energy
densities is analyzed, regular bouncing solutions are obtained. The role of the
space-time torsion provoking the acceleration of cosmological expansion is
discussed.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:06:49 GMT"
},
{
"version": "v2",
"created": "Tue, 2 Oct 2007 07:27:28 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Minkevich",
"A. V.",
""
],
[
"Garkun",
"A. S.",
""
],
[
"Kudin",
"V. I.",
""
]
] |
0706.1158 | Bjorn Andreas | Bjorn Andreas and Gottfried Curio | Deformations of Bundles and the Standard Model | 8 pages, references added | Phys.Lett.B655:290-293,2007 | 10.1016/j.physletb.2007.09.006 | null | hep-th | null | We modify a recently proposed heterotic model hep-th/0703210, giving three
net-generations of standard model fermions, to get rid of an additional U(1)
factor in the gauge group. The method employs a stable SU(5) bundle on a
Calabi-Yau threefold admitting a free involution. The bundle has to be built as
a deformation of the direct sum of a stable SU(4) bundle and the trivial line
bundle.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:08:48 GMT"
},
{
"version": "v2",
"created": "Thu, 6 Sep 2007 10:43:57 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Andreas",
"Bjorn",
""
],
[
"Curio",
"Gottfried",
""
]
] |
0706.1159 | Andrew Neate | A. D. Neate and A. Truman | A one dimensional analysis of turbulence and its intermittence for the
d-dimensional stochastic Burgers equation | 27 pages, 8 figures, to be published in Markov Processes and Related
Fields | null | null | null | math.PR | null | The inviscid limit of the stochastic Burgers equation is discussed in terms
of the level surfaces of the minimising Hamilton-Jacobi function, the classical
mechanical caustic and the Maxwell set and their algebraic pre-images under the
classical mechanical flow map. The problem is analysed in terms of a reduced
(one dimensional) action function. We demonstrate that the geometry of the
caustic, level surfaces and Maxwell set can change infinitely rapidly causing
turbulent behaviour which is stochastic in nature. The intermittence of this
turbulence is demonstrated in terms of the recurrence of two processes.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:20:56 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Neate",
"A. D.",
""
],
[
"Truman",
"A.",
""
]
] |
0706.1160 | Oscar Sotolongo Costa | Oscar Sotolongo-Costa, R. Gamez, A. Posadas, F. Luzon | Anomalous diffusion of epicentres | to be submitted for publication | null | null | null | physics.ins-det | null | The classification of earthquakes in main shocks and aftershocks by a method
recently proposed by M. Baiesi and M. Paczuski allows to the generation of a
complex network composed of clusters that group the most correlated events. The
spatial distribution of epicentres inside these structures corresponding to the
catalogue of earthquakes in the eastern region of Cuba shows anomalous
anti-diffusive behaviour evidencing the attractive nature of the main shock and
the possible description in terms of fractional kinetics.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:22:59 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Sotolongo-Costa",
"Oscar",
""
],
[
"Gamez",
"R.",
""
],
[
"Posadas",
"A.",
""
],
[
"Luzon",
"F.",
""
]
] |
0706.1161 | Debbarh Mohammed | Mohammed Debbarh | Some Uniform Limit Results in Additive Regression Model | 21 pages | null | null | null | math.ST math.PR stat.AP stat.TH | null | We establish some uniform limit results in the setting of additive regression
model estimation. Our results allow to give an asymptotic 100% confidence bands
for these components. These results are stated in the framework of i.i.d random
vectors when the marginal integration estimation method is used.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:24:01 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Debbarh",
"Mohammed",
""
]
] |
0706.1162 | Hichem Geryville | Hichem Geryville (LIESP), Yacine Ouzrout (LIESP), Abdelaziz Bouras
(LIESP), Nikolaos Sapidis | The multiple viewpoints as approach to information retrieval within
collaborative development context | null | Dans Information and Communication Technologies International
Symposium - Information and Communication Technologies International
Symposium (Proceedings of IEEE), Fez : Maroc (2007) | null | null | cs.HC | null | Nowadays, to achieve competitive advantage, the industrial companies are
considering that success is sustained to great product development. That is to
manage the product throughout its entire lifecycle. Achieving this goal
requires a tight collaboration between actors from a wide variety of domains,
using different software tools producing various product data types and
formats. The actors' collaboration is mainly based on the exchange /share
product information. The representation of the actors' viewpoints is the
underlying requirement of the collaborative product development. The multiple
viewpoints approach was designed to provide an organizational framework
following the actors' perspectives in the collaboration, and their
relationships. The approach acknowledges the inevitability of multiple
integration of product information as different views, promotes gathering of
actors' interest, and encourages retrieved adequate information while providing
support for integration through PLM and/or SCM collaboration. In this paper, a
multiple viewpoints representation is proposed. The product, process,
organization information models are discussed. A series of issues referring to
the viewpoints representation are discussed in detail. Based on XML standard,
taking electrical connector as an example, an application case of part of
product information modeling is stated.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:29:24 GMT"
}
] | 2008-02-19T00:00:00 | [
[
"Geryville",
"Hichem",
"",
"LIESP"
],
[
"Ouzrout",
"Yacine",
"",
"LIESP"
],
[
"Bouras",
"Abdelaziz",
"",
"LIESP"
],
[
"Sapidis",
"Nikolaos",
""
]
] |
0706.1163 | Takao Suyama | Hikaru Kawai, Takao Suyama | AdS/CFT Correspondence as a Consequence of Scale Invariance | 20 pages, 8 figures, references added | Nucl.Phys.B789:209-224,2008 | 10.1016/j.nuclphysb.2007.07.031 | KUNS-2078 | hep-th | null | We study an anisotropic scale transformation in the worldsheet description of
D3-branes in Type IIB theory, and show that the transformation is really a
symmetry in a region near D3-branes. AdS/CFT correspondence follows from this
symmetry. We will explicitly show that Wilson loops in N=4 supersymmetric
Yang-Mills theory and minimal surfaces in AdS_5 are related by the symmetry.
The functional form of a supersymmetric Wilson loop operator is naturally
derived from our worldsheet point of view.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:34:45 GMT"
},
{
"version": "v2",
"created": "Thu, 21 Jun 2007 07:28:17 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Kawai",
"Hikaru",
""
],
[
"Suyama",
"Takao",
""
]
] |
0706.1164 | Rinat Mamin F. | R. F. Mamin, I. K. Bdikin, A. L. Kholkin | Local Charged States in La_{0.89}Sr_{0.11}MnO_3 Single Crystals | 13 pages, 4 figures | null | null | null | cond-mat.mtrl-sci cond-mat.str-el | null | We report the direct evidence of the possibility of charge segregation in
manganites. The high contrast of electric-field-induced local charged states is
observed during more than 100 hours at room temperature. These induced states
display a piezoelectric response and polar properties. This effect may be an
example of a new kind of polar ordering in solid state.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:39:11 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Mamin",
"R. F.",
""
],
[
"Bdikin",
"I. K.",
""
],
[
"Kholkin",
"A. L.",
""
]
] |
0706.1165 | Francois Rincon | Francois Rincon (DAMTP, University of Cambridge) | On the existence of two-dimensional nonlinear steady states in plane
Couette flow | 7 pages, 7 figures, accepted for publication in Physics of Fluids | null | 10.1063/1.2753982 | null | physics.flu-dyn astro-ph | null | The problem of two-dimensional steady nonlinear dynamics in plane Couette
flow is revisited using homotopy from either plane Poiseuille flow or from
plane Couette flow perturbed by a small symmetry-preserving identity operator.
Our results show that it is not possible to obtain the nonlinear plane Couette
flow solutions reported by Cherhabili and Ehrenstein [Eur. J. Mech. B/Fluids,
14, 667 (1995)] using their Poiseuille-Couette homotopy. We also demonstrate
that the steady solutions obtained by Mehta and Healey [Phys. Fluids, 17, 4108
(2005)] for small symmetry-preserving perturbations are influenced by an
artefact of the modified system of equations used in their paper. However,
using a modified version of their model does not help to find plane Couette
flow solution in the limit of vanishing symmetry-preserving perturbations
either. The issue of the existence of two-dimensional nonlinear steady states
in plane Couette flow remains unsettled.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:48:00 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Rincon",
"Francois",
"",
"DAMTP, University of Cambridge"
]
] |
0706.1166 | Niall \'O Murchadha | Niall O Murchadha | The Liu-Yau mass as a good quasi-local energy in general relativity | 4 pqges, Latex | null | null | null | gr-qc | null | A quasi-local mass has been a long sought after quantity in general
relativity. A recent candidate has been the Liu-Yau mass. One can show that the
Liu-Yau mass of any two-surface is the maximum of the Brown-York energy for
that two-surface. This means that it has significant disadvantages as a mass.
It is much better interpreted as an energy and I will show one way of doing so.
The Liu-Yau mass is especially interesting in spherical geometries, where mass
and energy are indistinguishable. For a spherical two-surface, it equals the
minimum of the amount of energy at rest that one needs to put inside the
two-surface to generate the given surface geometry. Thus it gives interesting
information about the interior, something no other mass or energy function
does.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 11:52:18 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Murchadha",
"Niall O",
""
]
] |
0706.1167 | Predrag Dominis Prester | Maro Cvitan, Predrag Dominis Prester, Silvio Pallua and Ivica Smoli\'c | Extremal black holes in D=5: SUSY vs. Gauss-Bonnet corrections | 28 pages; minor changes, version to appear in JHEP | JHEP 0711:043,2007 | 10.1088/1126-6708/2007/11/043 | null | hep-th | null | We analyse near-horizon solutions and compare the results for the black hole
entropy of five-dimensional spherically symmetric extremal black holes when the
N=2 SUGRA actions are supplied with two different types of higher-order
corrections: (1) supersymmetric completion of gravitational Chern-Simons term,
and (2) Gauss-Bonnet term. We show that for large BPS black holes lowest order
\alpha' corrections to the entropy are the same, but for non-BPS are generally
different. We pay special attention to the class of prepotentials connected
with K3\times T^2 and T^6 compactifications. For supersymmetric correction we
find beside BPS also a set of non-BPS solutions. In the particular case of T^6
compactification (equivalent to the heterotic string on $T^4\times S^1$) we
find the (almost) complete set of solutions (with exception of some non-BPS
small black holes), and show that entropy of small black holes is different
from statistical entropy obtained by counting of microstates of heterotic
string theory. We also find complete set of solutions for K3\times T^2 and T^6
case when correction is given by Gauss-Bonnet term. Contrary to
four-dimensional case, obtained entropy is different from the one with
supersymmetric correction. We show that in Gauss-Bonnet case entropy of small
``BPS'' black holes agrees with microscopic entropy in the known cases.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:09:16 GMT"
},
{
"version": "v2",
"created": "Mon, 18 Jun 2007 01:32:40 GMT"
},
{
"version": "v3",
"created": "Sat, 10 Nov 2007 02:00:57 GMT"
}
] | 2009-11-18T00:00:00 | [
[
"Cvitan",
"Maro",
""
],
[
"Prester",
"Predrag Dominis",
""
],
[
"Pallua",
"Silvio",
""
],
[
"Smolić",
"Ivica",
""
]
] |
0706.1168 | Yoshihiro Ueda | Yoshihiro Ueda, Satoshi Eguchi (Kyoto University), Yuichi Terashima
(Ehime University), Richard Mushotzky, Jack Tueller, Craig Markwardt, Neil
Gehrels (NASA/GSFC), Yasuhiro Hashimoto, Stephen Potter (SAAO) | Suzaku Observations of Active Galactic Nuclei Detected in the Swift/BAT
Survey: Discovery of "New Type" of Buried Supermassive Black Holes | 4 pages, 3 figures, accepted for publication in ApJ Letter | null | 10.1086/520576 | null | astro-ph | null | We present the Suzaku broad band observations of two AGNs detected by the
Swift/BAT hard X-ray (>15 keV) survey that did not have previous X-ray data,
Swift J0601.9-8636 and Swift J0138.6-4001. The Suzaku spectra reveals in both
objects a heavily absorbed power law component with a column density of NH =~
10^{23.5-24} cm^{-2} that dominates above 10 keV, and an intense reflection
component with a solid angle >~ $2\pi$ from a cold, optically thick medium. We
find that these AGNs have an extremely small fraction of scattered light from
the nucleus, <~ 0.5% with respect to the intrinsic power law component. This
indicates that they are buried in a very geometrically-thick torus with a small
opening angle and/or have unusually small amount of gas responsible for
scattering. In the former case, the geometry of Swift J0601.9-8636 should be
nearly face-on as inferred from the small absorption for the reflection
component. The discovery of two such objects in this small sample implies that
there must be a significant number of yet unrecognized, very Compton thick AGNs
viewed at larger inclination angles in the local universe, which are difficult
to detect even in the currently most sensitive optical or hard X-ray surveys.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:53:07 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Ueda",
"Yoshihiro",
"",
"Kyoto University"
],
[
"Eguchi",
"Satoshi",
"",
"Kyoto University"
],
[
"Terashima",
"Yuichi",
"",
"Ehime University"
],
[
"Mushotzky",
"Richard",
"",
"NASA/GSFC"
],
[
"Tueller",
"Jack",
"",
"NASA/GSFC"
],
[
"Markwardt",
"Craig",
"",
"NASA/GSFC"
],
[
"Gehrels",
"Neil",
"",
"NASA/GSFC"
],
[
"Hashimoto",
"Yasuhiro",
"",
"SAAO"
],
[
"Potter",
"Stephen",
"",
"SAAO"
]
] |
0706.1169 | Aris L. Moustakas | Ralf R. Mueller, Dongning Guo, and Aris L. Moustakas | Vector Precoding for Wireless MIMO Systems: A Replica Analysis | 21 pages, 8 figures, submitted for publication to "IEEE JSAC Special
Issue on Multiuser Detection for Advanced Communication Systems and Networks" | null | 10.1109/JSAC.2008.080411 | null | cs.IT cond-mat.stat-mech math.IT | null | We apply the replica method to analyze vector precoding, a method to reduce
transmit power in antenna array communications. The analysis applies to a very
general class of channel matrices. The statistics of the channel matrix enter
the transmitted energy per symbol via its R-transform. We find that vector
precoding performs much better for complex than for real alphabets. As a
byproduct, we find a nonlinear precoding method with polynomial complexity that
outperforms NP-hard Tomlinson-Harashima precoding for binary modulation on
complex channels if the number of transmit antennas is slightly larger than
twice the number of receive antennas.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:21:04 GMT"
}
] | 2016-11-15T00:00:00 | [
[
"Mueller",
"Ralf R.",
""
],
[
"Guo",
"Dongning",
""
],
[
"Moustakas",
"Aris L.",
""
]
] |
0706.1170 | Rene Gerritsma | R. Gerritsma, S. Whitlock, T. Fernholz, H. Schlatter, J. A. Luigjes,
J.-U. Thiele, J. B. Goedkoop and R. J. C. Spreeuw | A lattice of microtraps for ultracold atoms based on patterned magnetic
films | 7 pages, 7 figures | Phys. Rev. A 76, 033408 (2007) | 10.1103/PhysRevA.76.033408 | null | physics.atom-ph | null | We have realized a two dimensional permanent magnetic lattice of
Ioffe-Pritchard microtraps for ultracold atoms. The lattice is formed by a
single 300 nm magnetized layer of FePt, patterned using optical lithography.
Our magnetic lattice consists of more than 15000 tightly confining microtraps
with a density of 1250 traps/mm$^2$. Simple analytical approximations for the
magnetic fields produced by the lattice are used to derive relevant trap
parameters. We load ultracold atoms into at least 30 lattice sites at a
distance of approximately 10 $\mu$m from the film surface. The present result
is an important first step towards quantum information processing with neutral
atoms in magnetic lattice potentials.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:24:14 GMT"
},
{
"version": "v2",
"created": "Thu, 20 Sep 2007 09:44:39 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Gerritsma",
"R.",
""
],
[
"Whitlock",
"S.",
""
],
[
"Fernholz",
"T.",
""
],
[
"Schlatter",
"H.",
""
],
[
"Luigjes",
"J. A.",
""
],
[
"Thiele",
"J. -U.",
""
],
[
"Goedkoop",
"J. B.",
""
],
[
"Spreeuw",
"R. J. C.",
""
]
] |
0706.1171 | Maillard Gregory | J. Gaertner, F. den Hollander, G. Maillard | Intermittency on catalysts | 11 pages, invited paper to appear in a Festschrift in honour of
Heinrich von Weizs\"acker, on the occasion of his 60th birthday, to be
published by Cambridge University Press | null | null | null | math.PR math-ph math.MP | null | The present paper provides an overview of results obtained in four recent
papers by the authors. These papers address the problem of intermittency for
the Parabolic Anderson Model in a \emph{time-dependent random medium},
describing the evolution of a ``reactant'' in the presence of a ``catalyst''.
Three examples of catalysts are considered: (1) independent simple random
walks; (2) symmetric exclusion process; (3) symmetric voter model. The focus is
on the annealed Lyapunov exponents, i.e., the exponential growth rates of the
successive moments of the reactant. It turns out that these exponents exhibit
an interesting dependence on the dimension and on the diffusion constant.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:29:39 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Gaertner",
"J.",
""
],
[
"Hollander",
"F. den",
""
],
[
"Maillard",
"G.",
""
]
] |
0706.1172 | Dominic Schuhmacher | Dominic Schuhmacher | Stein's method and Poisson process approximation for a class of
Wasserstein metrics | Published in at http://dx.doi.org/10.3150/08-BEJ161 the Bernoulli
(http://isi.cbs.nl/bernoulli/) by the International Statistical
Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm) | Bernoulli 2009, Vol. 15, No. 2, 550-568 | 10.3150/08-BEJ161 | IMS-BEJ-BEJ161 | math.PR | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Based on Stein's method, we derive upper bounds for Poisson process
approximation in the $L_1$-Wasserstein metric $d_2^{(p)}$, which is based on a
slightly adapted $L_p$-Wasserstein metric between point measures. For the case
$p=1$, this construction yields the metric $d_2$ introduced in [Barbour and
Brown Stochastic Process. Appl. 43 (1992) 9--31], for which Poisson process
approximation is well studied in the literature. We demonstrate the usefulness
of the extension to general $p$ by showing that $d_2^{(p)}$-bounds control
differences between expectations of certain $p$th order average statistics of
point processes. To illustrate the bounds obtained for Poisson process
approximation, we consider the structure of 2-runs and the hard core model as
concrete examples.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:35:12 GMT"
},
{
"version": "v2",
"created": "Thu, 9 Aug 2007 09:58:33 GMT"
},
{
"version": "v3",
"created": "Fri, 12 Jun 2009 09:21:06 GMT"
}
] | 2009-06-12T00:00:00 | [
[
"Schuhmacher",
"Dominic",
""
]
] |
0706.1173 | Andrew Neate | A. D. Neate and A. Truman | A one dimensional analysis of singularities and turbulence for the
stochastic Burgers equation in d-dimensions | 30 pages, 16 figures, to be published in Progress in Probability Vol.
59. Proceedings of the Seminar on Stochastic Analysis, Random Fields and
Applications V. Ascona. May 2005 | null | null | null | math.PR | null | The inviscid limit of the stochastic Burgers equation, with body forces white
noise in time, is discussed in terms of the level surfaces of the minimising
Hamilton-Jacobi function, the classical mechanical caustic and the Maxwell set
and their algebraic pre-images under the classical mechanical flow map. The
problem is analysed in terms of a reduced (one dimensional) action function. We
give an explicit expression for an algebraic surface containing the Maxwell set
and caustic in the polynomial case. Those parts of the caustic and Maxwell set
which are singular are characterised. We demonstrate how the geometry of the
caustic, level surfaces and Maxwell set can change infinitely rapidly causing
turbulent behaviour which is stochastic in nature, and we determine its
intermittence in terms of the recurrent behaviour of two processes.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:56:44 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Neate",
"A. D.",
""
],
[
"Truman",
"A.",
""
]
] |
0706.1174 | Yvan Martel | Yvan Martel and Frank Merle | Asymptotic stability of solitons of the gKdV equations with general
nonlinearity | Corrected typos. Added comments. Minor changes. To appear in
Mathematische Annalen | null | null | null | math.AP | null | We consider the generalized Korteweg-de Vries equation
\partial_t u + \partial_x (\partial_x^2 u + f(u))=0, \quad (t,x)\in
[0,T)\times \mathbb{R}, (1)
with general $C^3$ nonlinearity $f$. Under an explicit condition on $f$ and
$c>0$, there exists a solution in the energy space $H^1$ of (1) of the type
$u(t,x)=Q_c(x-x_0-ct)$, called soliton.
In this paper, under general assumptions on $f$ and $Q_c$, we prove that the
family of soliton solutions around $Q_c$ is asymptotically stable in some local
sense in $H^1$, i.e. if $u(t)$ is close to $Q_{c}$ (for all $t\geq 0$), then
$u(t)$ locally converges in the energy space to some $Q_{c_+}$ as $t\to
+\infty$. Note in particular that we do not assume the stability of $Q_{c}$.
This result is based on a rigidity property of equation (1) around $Q_{c}$ in
the energy space whose proof relies on the introduction of a dual problem.
These results extend the main results in previous works devoted to the pure
power case.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:47:06 GMT"
},
{
"version": "v2",
"created": "Thu, 18 Oct 2007 17:03:16 GMT"
}
] | 2007-10-18T00:00:00 | [
[
"Martel",
"Yvan",
""
],
[
"Merle",
"Frank",
""
]
] |
0706.1175 | Tomasz Grzywny | Tomasz Grzywny, Micha{\l} Ryznar | Two-sided optimal bounds for Green function of half-spaces for
relativistic $\alpha$-stable process | 33 pages | Potential Anal. 28 (2008), no. 3, 201--239 | null | null | math.PR | null | The purpose of this paper is to find optimal estimates for the Green function
of a half-space of {\it the relativistic $\alpha$-stable process} with
parameter $m$ on $\Rd$ space. This process has an infinitesimal generator of
the form $mI-(m^{2/\alpha}I-\Delta)^{\alpha/2},$ where $0<\alpha<2$, $m>0$, and
reduces to the isotropic $\alpha$-stable process for $m=0$. Its potential
theory for open bounded sets has been well developed throughout the recent
years however almost nothing was known about the behaviour of the process on
unbounded sets. The present paper is intended to fill this gap and we provide
two-sided sharp estimates for the Green function for a half-space. As a
byproduct we obtain some improvements of the estimates known for bounded sets
specially for balls. The advantage of these estimates is a clarification of the
relationship between the diameter of the ball and the parameter $m$ of the
process.
The main result states that the Green function is comparable with the Green
function for the Brownian motion if the points are away from the boundary of a
half-space and their distance is greater than one. On the other hand for the
remaining points the Green function is somehow related the Green function for
the isotropic $\alpha$-stable process. For example, for $d\ge3$, it is
comparable with the Green function for the isotropic $\alpha$-stable process,
provided that the points are close enough.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:47:12 GMT"
},
{
"version": "v2",
"created": "Fri, 22 Jun 2007 11:41:55 GMT"
}
] | 2011-07-06T00:00:00 | [
[
"Grzywny",
"Tomasz",
""
],
[
"Ryznar",
"Michał",
""
]
] |
0706.1176 | Sergey Dorogovtsev | A. N. Samukhin, S. N. Dorogovtsev, J. F. F. Mendes | Laplacian spectra of complex networks and random walks on them: Are
scale-free architectures really important? | 25 pages, 4 figures | Phys. Rev. E 77, 036115 (2008) | 10.1103/PhysRevE.77.036115 | null | cond-mat.stat-mech | null | We study the Laplacian operator of an uncorrelated random network and, as an
application, consider hopping processes (diffusion, random walks, signal
propagation, etc.) on networks. We develop a strict approach to these problems.
We derive an exact closed set of integral equations, which provide the averages
of the Laplacian operator's resolvent. This enables us to describe the
propagation of a signal and random walks on the network. We show that the
determining parameter in this problem is the minimum degree $q_m$ of vertices
in the network and that the high-degree part of the degree distribution is not
that essential. The position of the lower edge of the Laplacian spectrum
$\lambda_c$ appears to be the same as in the regular Bethe lattice with the
coordination number $q_m$. Namely, $\lambda_c>0$ if $q_m>2$, and $\lambda_c=0$
if $q_m\leq2$. In both these cases the density of eigenvalues
$\rho(\lambda)\to0$ as $\lambda\to\lambda_c+0$, but the limiting behaviors near
$\lambda_c$ are very different. In terms of a distance from a starting vertex,
the hopping propagator is a steady moving Gaussian, broadening with time. This
picture qualitatively coincides with that for a regular Bethe lattice. Our
analytical results include the spectral density $\rho(\lambda)$ near
$\lambda_c$ and the long-time asymptotics of the autocorrelator and the
propagator.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 18:49:24 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Samukhin",
"A. N.",
""
],
[
"Dorogovtsev",
"S. N.",
""
],
[
"Mendes",
"J. F. F.",
""
]
] |
0706.1177 | Hans Fogedby | Hans C. Fogedby | Stochastic Loewner Evolution | 38 pages, 9 figures | null | null | null | cond-mat.stat-mech | null | Stochastic Loewner evolution also called Schramm Loewner evolution
(abbreviated, SLE) is a rigorous tool in mathematics and statistical physics
for generating and studying scale invariant or fractal random curves in two
dimensions. The method is based on the older deterministic Loewner evolution
introduced by Karl Loewner, who demonstrated that an arbitrary curve not
crossing itself can be generated by a real function by means of a conformal
transformation. In 2000 Oded Schramm extended this method and demonstrated that
driving the Loewner evolution by a one-dimensional Brownian motion, the curves
in the complex plane become scale invariant; the fractal dimension turns out to
be determined by the strength of the Brownian motion. SLE fills a gap in our
understanding of the critical properties of a variety of lattice models in
their scaling limits and supplements the result obtained by means of conformal
field theory. In this paper we attempt to provide a simple and heuristic
discussion of some of the important aspects of SLE.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 12:50:22 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Fogedby",
"Hans C.",
""
]
] |
0706.1178 | Yvan Martel | Yvan Martel and Frank Merle | Refined asymptotics around solitons for gKdV equations | Minor changes. To appear in Discrete and Continuous Dynamical Systems
- Series A | null | null | null | math.AP | null | We consider the generalized Korteweg-de Vries equation $$ \partial_t u +
\partial_x (\partial_x^2 u + f(u))=0, \quad (t,x)\in [0,T)\times \mathbb{R}$$
with general $C^2$ nonlinearity $f$. Under an explicit condition on $f$ and
$c>0$, there exists a solution in the energy space $H^1$ of the type
$u(t,x)=Q_c(x-x_0-ct)$, called soliton. Stability theory for $Q_c$ is
well-known.
In previous works, we have proved that for $f(u)=u^p$, $p=2,3,4$, the family
of solitons is asymptotically stable in some local sense in $H^1$, i.e. if
$u(t)$ is close to $Q_{c}$ (for all $t\geq 0$), then $u(t,.+\rho(t))$ locally
converges in the energy space to some $Q_{c_+}$ as $t\to +\infty$, for some
$c^+\sim c$.
Then, the asymptotic stability result could be extended to the case of
general assumptions on $f$ and $Q_c$.
The objective of this paper is twofold.
The main objective is to prove that in the case $f(u)=u^p$, $p=2,3,4$,
$\rho(t)-c_+ t$ has limit as $t\to +\infty$ under the additional assumption
$x_+ u\in L^2$.
The second objective of this paper is to provide large time stability and
asymptotic stability results for two soliton solutions for the case of general
nonlinearity $f(u)$, when the ratio of the speeds of the solitons is small. The
motivation is to accompany forthcoming works devoted to the collision of two
solitons in the nonintegrable case. The arguments are refinements of previous
works specialized to the case $u(t)\sim Q_{c_1}+Q_{c_2}$, for $0< c_2 \ll c_1$.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:07:12 GMT"
},
{
"version": "v2",
"created": "Thu, 18 Oct 2007 17:08:16 GMT"
}
] | 2007-10-18T00:00:00 | [
[
"Martel",
"Yvan",
""
],
[
"Merle",
"Frank",
""
]
] |
0706.1179 | Hichem Geryville | Hichem Geryville (LIESP), Abdelaziz Bouras (LIESP), Yacine Ouzrout
(LIESP), Nikolaos Sapidis | Collaborative product and process model: Multiple Viewpoints approach | 391-398 | Innovative Products and Services through Collaborative Networks
(2006) 542 | 10.1000/ISBN0-85358-228-9 | null | cs.OH cs.IR | null | The design and development of complex products invariably involves many
actors who have different points of view on the problem they are addressing,
the product being developed, and the process by which it is being developed.
The actors' viewpoints approach was designed to provide an organisational
framework in which these different perspectives or points of views, and their
relationships, could be explicitly gathered and formatted (by actor activity's
focus). The approach acknowledges the inevitability of multiple interpretation
of product information as different views, promotes gathering of actors'
interests, and encourages retrieved adequate information while providing
support for integration through PLM and/or SCM collaboration. In this paper, we
present our multiple viewpoints approach, and we illustrate it by an industrial
example on cyclone vessel product.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:09:13 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Geryville",
"Hichem",
"",
"LIESP"
],
[
"Bouras",
"Abdelaziz",
"",
"LIESP"
],
[
"Ouzrout",
"Yacine",
"",
"LIESP"
],
[
"Sapidis",
"Nikolaos",
""
]
] |
0706.1180 | Tommaso Rizzo | Giorgio Parisi and Tommaso Rizzo | Large Deviations in the Free-Energy of Mean-Field Spin-Glasses | version to be submitted to PRL plus full power series in the
appendix, added references and minor corrections | Phys. Rev. Lett. 101, 117205 (2008) | 10.1103/PhysRevLett.101.117205 | null | cond-mat.dis-nn cond-mat.stat-mech | null | We compute analytically the probability distribution of large deviations in
the spin-glass free energy for the Sherrington-Kirkpatrick mean field model,
i.e. we compute the exponentially small probability of finding a system with
intensive free energy smaller than the most likely one. This result is obtained
by computing the average value of the partition function to the power $n$ as a
function of $n$. At zero temperature this absolute prediction displays a
remarkable quantitative agreement with the numerical data.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:23:50 GMT"
},
{
"version": "v2",
"created": "Wed, 20 Jun 2007 15:32:15 GMT"
}
] | 2012-10-31T00:00:00 | [
[
"Parisi",
"Giorgio",
""
],
[
"Rizzo",
"Tommaso",
""
]
] |
0706.1181 | Bonanno Giovanni | Saverio Bivona, Giovanni Bonanno, Riccardo Burlon, Claudio Leone | Polarization and angular distribution of the radiation emitted in
laser-assisted recombination | 5 pages, 3 figures | null | 10.1103/PhysRevA.76.031402 | null | cond-mat.other | null | The effect of an intense external linear polarized radiation field on the
angular distributions and polarization states of the photons emitted during the
radiative recombination is investigated. It is predicted, on symmetry grounds,
and corroborated by numerical calculations of approximate recombination rates,
that emission of elliptically polarized photons occurs when the momentum of the
electron beam is not aligned to the direction of the oscillating field.
Moreover, strong modifications to the angular distributions of the emitted
photons are induced by the external radiation field.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:30:57 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Bivona",
"Saverio",
""
],
[
"Bonanno",
"Giovanni",
""
],
[
"Burlon",
"Riccardo",
""
],
[
"Leone",
"Claudio",
""
]
] |
0706.1182 | Elizabeth M. Waldram | E. M. Waldram, R. C. Bolton, G. G. Pooley, J. M. Riley | Some estimates of the source counts at Planck Surveyor frequencies,
using the 9C survey at 15 GHz | 12 pages, 12 figures, accepted for publication in MNRAS | Mon.Not.Roy.Astron.Soc.379:1442-1452,2007 | 10.1111/j.1365-2966.2007.12025.x | null | astro-ph | null | We have used multi-frequency follow-up observations of a sample of
extragalactic sources from the 9C survey at 15 GHz to make deductions about the
expected source population at higher radio frequencies, such as those in the
lower frequency bands of the Planck Surveyor satellite. In particular, we have
made empirical estimates of the source counts at 22 GHz, 30 GHz, 43 GHz and 70
GHz and compared these with both known data and current theoretical
predictions. We have also made an estimate of the count at the ALMA frequency
of 90 GHz, with a view to assessing the possible population of point sources
available for the phase calibration of that instrument.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:27:02 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Waldram",
"E. M.",
""
],
[
"Bolton",
"R. C.",
""
],
[
"Pooley",
"G. G.",
""
],
[
"Riley",
"J. M.",
""
]
] |
0706.1183 | Martin Cederwall | Ling Bao, Martin Cederwall and Bengt E.W. Nilsson | Aspects of higher curvature terms and U-duality | 26 pp., 15 figs., plain tex | Class.Quant.Grav.25:095001,2008 | 10.1088/0264-9381/25/9/095001 | null | hep-th | null | We discuss various aspects of dimensional reduction of gravity with the
Einstein-Hilbert action supplemented by a lowest order deformation formed as
the Riemann tensor raised to powers two, three or four. In the case of R^2 we
give an explicit expression, and discuss the possibility of extended coset
symmetries, especially SL(n+1,Z) for reduction on an n-torus to three
dimensions. Then we start an investigation of the dimensional reduction of R^3
and R^4 by calculating some terms relevant for the coset formulation, aiming in
particular towards E_8(8)/(Spin(16)/Z_2) in three dimensions and an
investigation of the derivative structure. We emphasise some issues concerning
the need for the introduction of non-scalar automorphic forms in order to
realise certain expected enhanced symmetries.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:37:44 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Bao",
"Ling",
""
],
[
"Cederwall",
"Martin",
""
],
[
"Nilsson",
"Bengt E. W.",
""
]
] |
0706.1184 | Carsten Henkel | F. Intravaia, C. Henkel, A. Lambrecht | The Role of Surface Plasmons in The Casimir Effect | 12 pages, 8 figures, v2: minor changes, not including proofing | Phys. Rev. A 76 (2007) 033820 | 10.1103/PhysRevA.76.033820 | null | quant-ph | null | In this paper we study the role of surface plasmon modes in the Casimir
effect. The Casimir energy can be written as a sum over the modes of a real
cavity and one may identify two sorts of modes, two evanescent surface plasmon
modes and propagative modes. As one of the surface plasmon modes becomes
propagative for some choice of parameters we adopt an adiabatic mode definition
where we follow this mode into the propagative sector and count it together
with the surface plasmon contribution, calling this contribution "plasmonic".
We evaluate analytically the contribution of the plasmonic modes to the Casimir
energy. Surprisingly we find that this becomes repulsive for intermediate and
large mirror separations. The contribution of surface plasmons to the Casimir
energy plays a fundamental role not only at short but also at large distances.
This suggests possibilities to taylor the Casimir force via a manipulation of
the surface plasmons properties.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:42:00 GMT"
},
{
"version": "v2",
"created": "Wed, 26 Sep 2007 19:58:25 GMT"
}
] | 2007-09-26T00:00:00 | [
[
"Intravaia",
"F.",
""
],
[
"Henkel",
"C.",
""
],
[
"Lambrecht",
"A.",
""
]
] |
0706.1185 | Jingfei Zhang | Jingfei Zhang, Xin Zhang, Hongya Liu | Holographic tachyon model | 5 pages, 2 figures; version to appear in Phys. Lett. B | Phys.Lett.B651:84-88,2007 | 10.1016/j.physletb.2007.06.019 | null | astro-ph gr-qc hep-ph hep-th | null | We propose in this Letter a holographic model of tachyon dark energy. A
connection between the tachyon scalar-field and the holographic dark energy is
established, and accordingly, the potential of the holographic tachyon field is
constructed. We show that the holographic evolution of the universe with
$c\geqslant 1$ can be described completely by the resulting tachyon model in a
certain way.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 13:42:13 GMT"
},
{
"version": "v2",
"created": "Tue, 19 Jun 2007 05:42:29 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Zhang",
"Jingfei",
""
],
[
"Zhang",
"Xin",
""
],
[
"Liu",
"Hongya",
""
]
] |
0706.1186 | Paul Frampton | Paul H. Frampton and Thomas W. Kephart | Flavor Symmetry for Quarks and Leptons | 12 pages latex. More typos corrected | JHEP0709:110,2007 | 10.1088/1126-6708/2007/09/110 | null | hep-ph | null | Present data on neutrino masses and mixing favor the highly symmetric
tribimaximal neutrino mixing matrix which suggests an underlying flavor
symmetry. A systematic study of non-abelian finite groups of order $g \leq 31$
reveals that tribimaximal mixing can be derived not only from the well known
tetrahedral flavor symmetry $T \equiv A_4$, but also by using the binary
tetrahedral symmetry $T^{'} \equiv SL_2(F_3)$ which does not contain the
tetrahedral group as a subgroup. $T^{'}$ has the further advantage that it can
also neatly accommodate the quark masses including a heavy top quark.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:09:24 GMT"
},
{
"version": "v2",
"created": "Wed, 13 Jun 2007 15:27:14 GMT"
},
{
"version": "v3",
"created": "Thu, 6 Sep 2007 14:16:36 GMT"
},
{
"version": "v4",
"created": "Tue, 11 Sep 2007 02:47:40 GMT"
},
{
"version": "v5",
"created": "Fri, 14 Sep 2007 14:24:30 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Frampton",
"Paul H.",
""
],
[
"Kephart",
"Thomas W.",
""
]
] |
0706.1187 | Andrey Gorbach | A.V. Gorbach and D.V. Skryabin | Gravity-like potential traps light and stretches supercontinuum in
photonic crystal fibers | Substantially revised textm one figure added. 4 pages, 5 figures.
Submitted for publication on 3rd of April 2007 | null | null | null | physics.optics physics.class-ph | null | The use of photonic crystal fibers pumped by femtosecond pulses has enabled
the generation of broad optical supercontinua with nano-joule input energies.
This striking discovery has applications ranging from spectroscopy and
metrology to telecommunication and medicine. Amongst the physical principles
underlying supercontinuum generation are soliton fission, a variety of
four-wave mixing processes, Raman induced soliton self-frequency shift, and
dispersive wave generation mediated by solitons. Although all of the above
effects contribute to supercontinuum generation none of them can explain the
generation of blue and violet light from infrared femtosecond pump pulses,
which has been seen already in the first observations of the supercontinuum in
photonic crystal fibers. In this work we argue that the most profound role in
the shaping of the short-wavelength edge of the continuum is played by the
effect of radiation trapping in a gravity-like potential created by
accelerating solitons. The underlying physics of this effect has a
straightforward analogy with the inertial forces acting on an observer moving
with a constant acceleration.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 14:52:24 GMT"
},
{
"version": "v2",
"created": "Wed, 29 Aug 2007 07:32:40 GMT"
}
] | 2007-08-29T00:00:00 | [
[
"Gorbach",
"A. V.",
""
],
[
"Skryabin",
"D. V.",
""
]
] |
0706.1188 | Peter Curran | P.A. Curran, A.J. van der Horst, R.A.M.J. Wijers, R.L.C. Starling,
A.J. Castro-Tirado, J.P.U. Fynbo, J. Gorosabel, A.S. Jarvinen, D. Malesani,
E. Rol, N.R. Tanvir, K. Wiersema, M.R. Burleigh, S.L. Casewell, P.D. Dobbie,
S. Guziy, P. Jakobsson, M. Jelinek, P. Laursen, A.J. Levan, C.G. Mundell, J.
Naranen, S. Piranomonte | GRB 060206 and the quandary of achromatic breaks in afterglow light
curves | 5 pages including 1 figure; accepted for publication in MNRAS Letters
after minor revisions | Mon.Not.Roy.Astron.Soc. 281 (2007) L65-L69 | 10.1111/j.1745-3933.2007.00368.x | null | astro-ph | null | Gamma-ray burst afterglow observations in the Swift era have a perceived lack
of achromatic jet breaks compared to the BeppoSAX era. We present our
multi-wavelength analysis of GRB 060206 as an illustrative example of how
inferences of jet breaks from optical and X-ray data might differ. The results
of temporal and spectral analyses are compared, and attempts are made to fit
the data within the context of the standard blast wave model. We find that
while the break appears more pronounced in the optical and evidence for it from
the X-ray alone is weak, the data are actually consistent with an achromatic
break at about 16 hours. This break and the light curves fit standard blast
wave models, either as a jet break or as an injection break. As the pre-Swift
sample of afterglows are dominated by optical observations, and in the Swift
era most well sampled light curves are in the X-ray, caution is needed when
making a direct comparison between the two samples, and when making definite
statements on the absence of achromatic breaks.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:00:00 GMT"
},
{
"version": "v2",
"created": "Thu, 19 Jul 2007 11:46:38 GMT"
}
] | 2007-10-04T00:00:00 | [
[
"Curran",
"P. A.",
""
],
[
"van der Horst",
"A. J.",
""
],
[
"Wijers",
"R. A. M. J.",
""
],
[
"Starling",
"R. L. C.",
""
],
[
"Castro-Tirado",
"A. J.",
""
],
[
"Fynbo",
"J. P. U.",
""
],
[
"Gorosabel",
"J.",
""
],
[
"Jarvinen",
"A. S.",
""
],
[
"Malesani",
"D.",
""
],
[
"Rol",
"E.",
""
],
[
"Tanvir",
"N. R.",
""
],
[
"Wiersema",
"K.",
""
],
[
"Burleigh",
"M. R.",
""
],
[
"Casewell",
"S. L.",
""
],
[
"Dobbie",
"P. D.",
""
],
[
"Guziy",
"S.",
""
],
[
"Jakobsson",
"P.",
""
],
[
"Jelinek",
"M.",
""
],
[
"Laursen",
"P.",
""
],
[
"Levan",
"A. J.",
""
],
[
"Mundell",
"C. G.",
""
],
[
"Naranen",
"J.",
""
],
[
"Piranomonte",
"S.",
""
]
] |
0706.1189 | Carles Bona | Daniela Alic, Carles Bona, Carles Bona-Casas and Joan Mass\'o | Efficient implementation of finite volume methods in Numerical
Relativity | Revised version, 10 pages, 6 figures. To appear in Phys. Rev. D | Phys.Rev.D76:104007,2007 | 10.1103/PhysRevD.76.104007 | null | gr-qc | null | Centered finite volume methods are considered in the context of Numerical
Relativity. A specific formulation is presented, in which third-order space
accuracy is reached by using a piecewise-linear reconstruction. This
formulation can be interpreted as an 'adaptive viscosity' modification of
centered finite difference algorithms. These points are fully confirmed by 1D
black-hole simulations. In the 3D case, evidence is found that the use of a
conformal decomposition is a key ingredient for the robustness of black hole
numerical codes.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:08:06 GMT"
},
{
"version": "v2",
"created": "Thu, 9 Aug 2007 11:29:19 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Alic",
"Daniela",
""
],
[
"Bona",
"Carles",
""
],
[
"Bona-Casas",
"Carles",
""
],
[
"Massó",
"Joan",
""
]
] |
0706.1190 | Martin Goldstern | Martin Goldstern and Saharon Shelah | All creatures great and small | 29 pages | null | null | Shelah [GoSh:884] | math.RA math.LO | null | Let kappa be an uncountable regular cardinal. Assuming 2^kappa=kappa^+, we
show that the clone lattice on a set of size kappa is not dually atomic.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:34:35 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Goldstern",
"Martin",
""
],
[
"Shelah",
"Saharon",
""
]
] |
0706.1191 | Aaron S. Cohen | A. S. Cohen, W. M. Lane, W. D. Cotton, N. E. Kassim, T. J. W. Lazio,
R. A. Perley, J. J. Condon and W. C. Erickson | The VLA Low-frequency Sky Survey | 53 pages, including 3 tables and 15 figures. Has been accepted for
publication in the Astronomical Journal | Astron.J.134:1245-1262,2007 | 10.1086/520719 | null | astro-ph | null | The Very Large Array (VLA) Low-frequency Sky Survey (VLSS) has imaged 95% of
the 3*pi sr of sky north of declination = -30 degrees at a frequency of 74 MHz
(4 meter wavelength). The resolution is 80" (FWHM) throughout, and the typical
RMS noise level is ~0.1 Jy/beam. The typical point-source detection limit is
0.7 Jy/beam and so far nearly 70,000 sources have been catalogued. This survey
used the 74 MHz system added to the VLA in 1998. It required new imaging
algorithms to remove the large ionospheric distortions at this very low
frequency throughout the entire ~11.9 degree field of view. This paper
describes the observation and data reduction methods used for the VLSS and
presents the survey images and source catalog. All of the calibrated images and
the source catalog are available online (http://lwa.nrl.navy.mil/VLSS) for use
by the astronomical community.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:17:47 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Cohen",
"A. S.",
""
],
[
"Lane",
"W. M.",
""
],
[
"Cotton",
"W. D.",
""
],
[
"Kassim",
"N. E.",
""
],
[
"Lazio",
"T. J. W.",
""
],
[
"Perley",
"R. A.",
""
],
[
"Condon",
"J. J.",
""
],
[
"Erickson",
"W. C.",
""
]
] |
0706.1192 | Delfim F. M. Torres | Agnieszka B. Malinowska, Delfim F. M. Torres | A Computational Approach to Essential and Nonessential Objective
Functions in Linear Multicriteria Optimization | To be partially presented at the 23rd IFIP TC 7 International
Conference on System Modelling and Optimization, Cracow, Poland, July 23-27,
2007. Work supported by KBN under Bialystok Technical University grant
W/WI/17/07; and the R&D unit CEOC of the University of Aveiro through FCT and
FEDER/POCI 2010 | J Optim Theory Appl (2008) 139: 577--590 | 10.1007/s10957-008-9397-z | null | math.OC | null | The question of obtaining well-defined criteria for multiple criteria
decision making problems is well-known. One of the approaches dealing with this
question is the concept of nonessential objective function. A certain objective
function is called nonessential if the set of efficient solutions is the same
both with or without that objective function. In this paper we put together two
methods for determining nonessential objective functions. A computational
implementation is done using a computer algebra system.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:22:59 GMT"
}
] | 2008-11-08T00:00:00 | [
[
"Malinowska",
"Agnieszka B.",
""
],
[
"Torres",
"Delfim F. M.",
""
]
] |
0706.1193 | Andreas Metz | S. Meissner, A. Metz, and K. Goeke | Are generalized and transverse momentum dependent parton distributions
related ? | 4 pages, talk given at the conference DIS 2007 | null | 10.3360/dis.2007.138 | null | hep-ph | null | The present knowledge on non-trivial relations between generalized parton
distributions on the one hand and transverse momentum dependent distributions
on the other is reviewed. While various relations can be found in the framework
of spectator models, so far no model-independent non-trivial relations have
been established.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:25:07 GMT"
}
] | 2008-12-23T00:00:00 | [
[
"Meissner",
"S.",
""
],
[
"Metz",
"A.",
""
],
[
"Goeke",
"K.",
""
]
] |
0706.1194 | Alain Albouy | Alain Albouy (IMCCE), Yanning Fu, Shanzhong Sun (IMCCE) | Symmetry of Planar Four-Body Convex Central Configurations | 12 pages | Proceedings of the Royal Society A, 464 (2008), pp. 1355-1365 | 10.1098/rspa.2007.0320 | null | math-ph math.MP | null | We study the relationship between the masses and the geometric properties of
central configurations. We prove that in the planar four-body problem, a convex
central configuration is symmetric with respect to one diagonal if and only if
the masses of the two particles on the other diagonal are equal. If these two
masses are unequal, then the less massive one is closer to the former diagonal.
Finally, we extend these results to the case of non-planar central
configurations of five particles.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 15:25:20 GMT"
}
] | 2015-11-24T00:00:00 | [
[
"Albouy",
"Alain",
"",
"IMCCE"
],
[
"Fu",
"Yanning",
"",
"IMCCE"
],
[
"Sun",
"Shanzhong",
"",
"IMCCE"
]
] |
0706.1195 | Nathaniel Bishop | N. C. Bishop, M. Padmanabhan, K. Vakili, Y. P. Shkolnikov, E. P. De
Poortere, M. Shayegan | Valley polarization and susceptibility of composite fermions around
nu=3/2 | to appear in Phys. Rev. Lett | null | 10.1103/PhysRevLett.98.266404 | null | cond-mat.mes-hall cond-mat.str-el | null | We report magnetotransport measurements of fractional quantum Hall states in
an AlAs quantum well around Landau level filling factor nu = 3/2, demonstrating
that the quasiparticles are composite Fermions (CFs) with a valley degree of
freedom. By monitoring the valley level crossings for these states as a
function of applied symmetry-breaking strain, we determine the CF valley
susceptibility and polarization. The data can be explained well by a simple
Landau level fan diagram for CFs, and are in nearly quantitative agreement with
the results reported for CF spin polarization.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:03:19 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Bishop",
"N. C.",
""
],
[
"Padmanabhan",
"M.",
""
],
[
"Vakili",
"K.",
""
],
[
"Shkolnikov",
"Y. P.",
""
],
[
"De Poortere",
"E. P.",
""
],
[
"Shayegan",
"M.",
""
]
] |
0706.1196 | Feng Yuan | Jian-Wei Qiu, Werner Vogelsang, Feng Yuan | Single Transverse-Spin Asymmetry in Hadronic Dijet Production | 60 pages, 22 figures | Phys.Rev.D76:074029,2007 | 10.1103/PhysRevD.76.074029 | BNL-NT-07/25, RBRC-676 | hep-ph | null | We study the single transverse-spin asymmetry for dijet production in
hadronic collisions in both the collinear QCD factorization approach and the
Brodsky-Hwang-Schmidt model. We show that a nonvanishing asymmetry is generated
by both initial-state and final-state interactions, and that the final-state
interactions dominate. We find that in the leading kinematic region where the
transverse momentum imbalance of the two jets, q_\perp = P_{1\perp}+P_{2\perp},
is much less than the momentum of either jet, the contribution from the lowest
non-trivial perturbative order to both the spin-averaged and the spin-dependent
dijet cross sections can be factorized into a hard part that is a function only
of the averaged jet momentum P_\perp = (P_{1\perp}-P_{2\perp})/2, and
perturbatively generated transverse momentum dependent (TMD) parton
distributions. We show that the spin asymmetry at this non-trivial perturbative
order can be described by the TMD parton distributions defined in either
semi-inclusive DIS or the Drell-Yan process. We derive the same hard parts from
both the collinear factorization approach and in the context of the
Brodsky-Hwang-Schmidt model, verifying that they are not sensitive to details
of the factorized long distance physics.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 19:03:06 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Qiu",
"Jian-Wei",
""
],
[
"Vogelsang",
"Werner",
""
],
[
"Yuan",
"Feng",
""
]
] |
0706.1197 | Antonio De Felice | Antonio De Felice, Pia Mukherjee, Yun Wang | Observational Bounds on Modified Gravity Models | 23 pages, 5 figures, uses RevTeX | Phys.Rev.D77:024017,2008 | 10.1103/PhysRevD.77.024017 | null | astro-ph | null | Modified gravity provides a possible explanation for the currently observed
cosmic accelaration. In this paper, we study general classes of modified
gravity models. The Einstein-Hilbert action is modified by using general
functions of the Ricci and the Gauss-Bonnet scalars, both in the metric and in
the Palatini formalisms. We do not use an explicit form for the functions, but
a general form with a valid Taylor expansion up to second order about redshift
zero in the Riemann-scalars. The coefficients of this expansion are then
reconstructed via the cosmic expansion history measured using current
cosmological observations. These are the quantities of interest for theoretical
considerations relating to ghosts and instabilities. We find that current data
provide interesting constraints on the coefficients. The next-generation dark
energy surveys should shrink the allowed parameter space for modifed gravity
models quite dramatically.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:11:53 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"De Felice",
"Antonio",
""
],
[
"Mukherjee",
"Pia",
""
],
[
"Wang",
"Yun",
""
]
] |
0706.1198 | Anirban Banerjee | Anirban Banerjee and J\"urgen Jost | Spectral plots and the representation and interpretation of biological
data | 15 pages, 7 figures | Theory in Biosciences, 126(1), 15-21, (2007) | 10.1007/s12064-007-0005-9 | null | q-bio.QM | null | It is basic question in biology and other fields to identify the char-
acteristic properties that on one hand are shared by structures from a
particular realm, like gene regulation, protein-protein interaction or neu- ral
networks or foodwebs, and that on the other hand distinguish them from other
structures. We introduce and apply a general method, based on the spectrum of
the normalized graph Laplacian, that yields repre- sentations, the spectral
plots, that allow us to find and visualize such properties systematically. We
present such visualizations for a wide range of biological networks and compare
them with those for networks derived from theoretical schemes. The differences
that we find are quite striking and suggest that the search for universal
properties of biological networks should be complemented by an understanding of
more specific features of biological organization principles at different
scales.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:52:48 GMT"
}
] | 2012-10-19T00:00:00 | [
[
"Banerjee",
"Anirban",
""
],
[
"Jost",
"Jürgen",
""
]
] |
0706.1199 | Tooru Taniguchi | Tooru Taniguchi and E. G. D. Cohen | Inertial Effects in Nonequilibrium Work Fluctuations by a Path Integral
Approach | 16 pages, 7 figures | J. Stat. Phys. 130, 1-26 (2008) | 10.1007/s10955-007-9398-6 | null | cond-mat.stat-mech | null | Inertial effects in fluctuations of the work to sustain a system in a
nonequilibrium steady state are discussed for a dragged massive Brownian
particle model using a path integral approach. We calculate the work
distribution function in the laboratory and comoving frames and prove the
asymptotic fluctuation theorem for these works for any initial condition.
Important and observable differences between the work fluctuations in the two
frames appear for finite times and are discussed concretely for a
nonequilibrium steady state initial condition. We also show that for finite
times a time oscillatory behavior appears in the work distribution function for
masses larger than a nonzero critical value.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:19:33 GMT"
}
] | 2007-12-12T00:00:00 | [
[
"Taniguchi",
"Tooru",
""
],
[
"Cohen",
"E. G. D.",
""
]
] |
0706.1200 | Amir Masoud Ghezelbash | A.M. Ghezelbash | Resolved Conifolds in Supergravity Solutions | 9 pages, 2 figures, minor changes, references added, version to
appear in Phys. Rev. D | Phys.Rev.D77:026006,2008 | 10.1103/PhysRevD.77.026006 | null | hep-th | null | We construct generalized 11D supergravity solutions of fully localized
intersecting D2/D4 brane systems. These solutions are obtained by embedding
six-dimensional resolved Eguchi-Hanson conifolds lifted to M-theory. We reduce
these solutions to ten dimensions, obtaining new D-brane systems in type IIA
supergravity. We discuss the limits in which the dynamics of the D2 brane
decouples from the bulk for these solutions.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 18:58:25 GMT"
},
{
"version": "v2",
"created": "Sat, 22 Dec 2007 19:28:03 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Ghezelbash",
"A. M.",
""
]
] |
0706.1201 | Matthias Brust R. | Jose Eduardo M. Lobo, Jorge Luis Risco Becerra, Matthias R. Brust,
Steffen Rothkugel, Christian M. Adriano | Developing a Collaborative and Autonomous Training and Learning
Environment for Hybrid Wireless Networks | Global Congress on Engineering and Technology Education (GCETE 2005) | null | null | null | cs.CY cs.HC cs.NI | null | With larger memory capacities and the ability to link into wireless networks,
more and more students uses palmtop and handheld computers for learning
activities. However, existing software for Web-based learning is not
well-suited for such mobile devices, both due to constrained user interfaces as
well as communication effort required. A new generation of applications for the
learning domain that is explicitly designed to work on these kinds of small
mobile devices has to be developed. For this purpose, we introduce CARLA, a
cooperative learning system that is designed to act in hybrid wireless
networks. As a cooperative environment, CARLA aims at disseminating teaching
material, notes, and even components of itself through both fixed and mobile
networks to interested nodes. Due to the mobility of nodes, CARLA deals with
upcoming problems such as network partitions and synchronization of teaching
material, resource dependencies, and time constraints.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:38:32 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Lobo",
"Jose Eduardo M.",
""
],
[
"Becerra",
"Jorge Luis Risco",
""
],
[
"Brust",
"Matthias R.",
""
],
[
"Rothkugel",
"Steffen",
""
],
[
"Adriano",
"Christian M.",
""
]
] |
0706.1202 | Mark Gieles | M. Gieles (1,2), H.J.G.L.M. Lamers (1), S.F. Portegies Zwart (3) ((1)
Utrecht (2) ESO Santiago, (3) Amsterdam) | On the Interpretation of the Age Distribution of Star Clusters in the
Small Magellanic Cloud | 8 pages, 4 figures, accepted for publication in ApJ | null | 10.1086/520795 | null | astro-ph | null | We re-analyze the age distribution (dN/dt) of star clusters in the Small
Magellanic Cloud (SMC) using age determinations based on the Magellanic Cloud
Photometric Survey. For ages younger than 3x10^9 yr the dN/dt distribution can
be approximated by a power-law distribution, dN/dt propto t^-beta, with
-beta=-0.70+/-0.05 or -beta=-0.84+/-0.04, depending on the model used to derive
the ages. Predictions for a cluster population without dissolution limited by a
V-band detection result in a power-law dN/dt distribution with an index of
~-0.7. This is because the limiting cluster mass increases with age, due to
evolutionary fading of clusters, reducing the number of observed clusters at
old ages. When a mass cut well above the limiting cluster mass is applied, the
dN/dt distribution is flat up to 1 Gyr. We conclude that cluster dissolution is
of small importance in shaping the dN/dt distribution and incompleteness causes
dN/dt to decline. The reason that no (mass independent) infant mortality of
star clusters in the first ~10-20 Myr is found is explained by a detection bias
towards clusters without nebular emission, i.e. cluster that have survived the
infant mortality phase. The reason we find no evidence for tidal (mass
dependent) cluster dissolution in the first Gyr is explained by the weak tidal
field of the SMC. Our results are in sharp contrast to the interpretation of
Chandar et al. (2006), who interpret the declining dN/dt distribution as rapid
cluster dissolution. This is due to their erroneous assumption that the sample
is limited by cluster mass, rather than luminosity.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:40:21 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Gieles",
"M.",
""
],
[
"Lamers",
"H. J. G. L. M.",
""
],
[
"Zwart",
"S. F. Portegies",
""
]
] |
0706.1203 | Tanmay Vachaspati | Tanmay Vachaspati | Black Stars and Gamma Ray Bursts | 2 pages, 1 figure; included Addendum to connect with LIGO+Fermi
observations | null | null | null | astro-ph gr-qc hep-th | http://arxiv.org/licenses/nonexclusive-distrib/1.0/ | Stars that are collapsing toward forming a black hole but are frozen near the
Schwarzschild horizon are termed "black stars". Collisions of black stars, in
contrast to black hole collisions, may be sources of gamma ray bursts, whose
basic parameters are estimated quite simply and are found to be consistent with
observed gamma ray bursts. Black star gamma ray bursts should be preceded by
gravitational wave emission similar to that from the coalescence of black
holes.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:46:20 GMT"
},
{
"version": "v2",
"created": "Wed, 16 Mar 2016 22:46:33 GMT"
}
] | 2016-03-18T00:00:00 | [
[
"Vachaspati",
"Tanmay",
""
]
] |
0706.1204 | Dimitar Stoyanov | Dimitar G. Stoyanov | Analytical Form of Current-Voltage Characteristic of a Parallel-Plane
Ionization Chamber | 13 pages, 4 figures, 2 Tables; changed content | null | null | null | physics.gen-ph physics.plasm-ph | null | The elementary processes taking place in the formation of charged particles
and their flow in the ionization chamber are considered. On the basic of
particles and charges balance a differential equation describing the
distribution of current densities in the ionization chamber volume is obtained.
As a result of the differential equation solution an analytical form of the
current-voltage characteristic of a parallel-plane ionization chamber is
obtained.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:19:49 GMT"
},
{
"version": "v2",
"created": "Wed, 13 Jun 2007 19:27:28 GMT"
},
{
"version": "v3",
"created": "Tue, 11 Sep 2007 19:50:41 GMT"
}
] | 2007-09-11T00:00:00 | [
[
"Stoyanov",
"Dimitar G.",
""
]
] |
0706.1205 | Francesco Fumarola | Francesco Fumarola, Erich J. Mueller | Single particle spectrum of resonant population imbalanced Fermi gases | 4 pages, 4 figures | null | null | null | cond-mat.other cond-mat.stat-mech | null | We use a T-matrix approximation to calculate the single particle spectrum of
the normal state of a gas of Fermionic atoms at low temperature.
In the strongly interacting regime of the polarized gas, we find that the
spectrum is separated in two branches, leading to a double-peaked
radiofrequency spectral feature.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 16:55:06 GMT"
}
] | 2007-06-11T00:00:00 | [
[
"Fumarola",
"Francesco",
""
],
[
"Mueller",
"Erich J.",
""
]
] |
0706.1206 | Grunberg | S. Friot, G. Grunberg | Constant terms in threshold resummation and the quark form factor | 39 pages, no figure; version 2: same content, but improved
presentation, with a new section devoted to the variety of resummation
procedures; version 3: journal version, where a remark about the all orders
validity of the conjecture in the DIS case is reported | JHEP 0709:002,2007 | 10.1088/1126-6708/2007/09/002 | null | hep-ph | null | We verify to order alpha_s^4 two previously conjectured relations, valid in
four dimensions, between constant terms in threshold resummation (for Deep
Inelastic Scattering and the Drell-Yan process) and the second logarithmic
derivative of the massless quark form factor. The same relations are checked to
all orders in the large beta_0 limit; as a byproduct a dispersive
representation of the form factor is obtained. These relations allow to compute
in a symmetrical way the three-loop resummation coefficients B_3 and D_3 in
terms of the three-loop contributions to the virtual diagonal splitting
function and to the quark form factor, confirming results obtained in the
literature.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:07:31 GMT"
},
{
"version": "v2",
"created": "Fri, 15 Jun 2007 14:36:07 GMT"
},
{
"version": "v3",
"created": "Tue, 4 Sep 2007 15:01:19 GMT"
}
] | 2010-02-03T00:00:00 | [
[
"Friot",
"S.",
""
],
[
"Grunberg",
"G.",
""
]
] |
0706.1207 | Michael Creutz | Michael Creutz | Effective potentials, thermodynamics, and twisted mass quarks | 19 pages, 15 figures; version to appear in Phys. Rev. D | Phys.Rev.D76:054501,2007 | 10.1103/PhysRevD.76.054501 | null | hep-lat | null | Using effective Lagrangian arguments, I explore the qualitative behavior
expected at finite temperature for two flavor lattice QCD formulated with
Wilson fermions and a twisted mass term. A rather rich phase structure is
predicted, exhibiting Aoki's parity violating phase along with a deconfinement
region forming a conical structure in the space of coupling, hopping parameter,
and twisted mass variables.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 19:54:54 GMT"
},
{
"version": "v2",
"created": "Wed, 13 Jun 2007 01:49:07 GMT"
},
{
"version": "v3",
"created": "Fri, 20 Jul 2007 17:05:13 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Creutz",
"Michael",
""
]
] |
0706.1208 | Philipp Maass | F. Eurich, A. Karatchentsev, J. Baschnagel, W. Dieterich, P. Maass | Soft particle model for block copolymers | 20 pages, 13 figures | null | 10.1063/1.2787007 | null | cond-mat.mtrl-sci cond-mat.soft | null | A soft particle model for diblock (AB) copolymer melts is proposed. Each
molecule is mapped onto two soft spheres built by Gaussian A- and B-monomer
distributions. An approximate analytical expression for the joint distribution
function for the distance between both spheres and their radii of gyration is
derived, which determines the entropic contribution to the intramolecular free
energy. Adding a mean-field expression for the intermolecular interactions, we
obtain the total free energy of the system. Based on this free energy, Monte
Carlo simulations are carried out to study the kinetics of microphase ordering
in the bulk and its effect on molecular diffusion. This is followed by an
analysis of thin films with emphasis on pattern transfer from walls with a
periodic structure. It is shown that the level of coarse graining in the soft
particle model is suitable to describe structural and kinetic properties of
copolymers on mesoscopic scales.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:19:02 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Eurich",
"F.",
""
],
[
"Karatchentsev",
"A.",
""
],
[
"Baschnagel",
"J.",
""
],
[
"Dieterich",
"W.",
""
],
[
"Maass",
"P.",
""
]
] |
0706.1209 | Volker Schomerus | Volker Schomerus | Strings for Quantumchromodynamics | 11 pages; Presented at 33rd International Conference on High Energy
Physics (ICHEP 06), Moscow, Russia, 26 Jul - 2 Aug 2006 | Int.J.Mod.Phys.A22:5561-5571,2007 | 10.1142/S0217751X07038827 | DESY 07-044 | hep-ph hep-th | null | During the last ten years, intriguing dualities between gauge and string
theory have been found and explored. They provide a novel window on strongly
coupled gauge physics, including QCD-like models. Based on a short historical
review of modern string theory, we shall explain how so-called AdS/CFT
dualities emerged at the end of the 1990s. Some of their concrete implications
and remarkable recent progress are then illustrated for the simplest example,
namely the multicolor limit of \N=4 Super Yang-Mills theory in four dimensions.
We end with a few comments on existing extensions to more realistic models and
applications, in particular to strongly coupled quark gluon plasmas. This text
is meant as a non-technical introduction to gauge/string dualities for
(particle) physicists.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:22:27 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Schomerus",
"Volker",
""
]
] |
0706.1210 | Antonio Paulo Baeta Scarpelli | Carlos R. Pontes, A. P. Ba\^eta Scarpelli, Marcos Sampaio, J. L.
Acebal, M. C. Nemes | On the equivalence between Implicit Regularization and Constrained
Differential Renormalization | 16 pages | Eur.Phys.J.C53:121-131,2008 | 10.1140/epjc/s10052-007-0437-x | null | hep-th | null | Constrained Differential Renormalization (CDR) and the constrained version of
Implicit Regularization (IR) are two regularization independent techniques that
do not rely on dimensional continuation of the space-time. These two methods
which have rather distinct basis have been successfully applied to several
calculations which show that they can be trusted as practical, symmetry
invariant frameworks (gauge and supersymmetry included) in perturbative
computations even beyond one-loop order.
In this paper, we show the equivalence between these two methods at one-loop
order. We show that the configuration space rules of CDR can be mapped into the
momentum space procedures of Implicit Regularization, the major principle
behind this equivalence being the extension of the properties of regular
distributions to the regularized ones.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:22:29 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Pontes",
"Carlos R.",
""
],
[
"Scarpelli",
"A. P. Baêta",
""
],
[
"Sampaio",
"Marcos",
""
],
[
"Acebal",
"J. L.",
""
],
[
"Nemes",
"M. C.",
""
]
] |
0706.1211 | Lars English | Ryan Stearrett, L.Q. English | Experimental Generation of Intrinsic Localized Modes in a discrete
electrical transmission line | 5 pages, 9 figures | J. Phys. D: Appl. Phys. 40 (2007) 5394-5398 | 10.1088/0022-3727/40/17/058 | null | nlin.PS | null | Experimental evidence for the generation of intrinsic localized modes (ILMs)
in a nonlinear electrical transmission line is presented both via modulational
instability (MI) of the uniform mode and via driving the lattice locally. The
spatial profiles of these modes localized on the order of the lattice spacing
can be directly measured in this macroscopic lattice, in contrast to most other
systems where ILMs have so far been detected.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:23:20 GMT"
}
] | 2009-11-13T00:00:00 | [
[
"Stearrett",
"Ryan",
""
],
[
"English",
"L. Q.",
""
]
] |
0706.1212 | Piera L. Ghia | Piera L. Ghia (for the Pierre Auger Collaboration) | Testing the surface detector simulation for the Pierre Auger Observatory | To be published in the Proceedings of the 30th International Cosmic
Ray Conference, July 3 - 11, 2007, Merida, Yucatan, Mexico | null | null | null | astro-ph | null | The building block of the surface detector of the Pierre Auger Observatory is
a water Cherenkov tank. The response to shower particles is simulated using a
dedicated program based on GEANT4. To check the simulation chain, we compare
the simulated signals produced by cosmic muons at various zenith angles with
experimental data from a special Cherenkov detector equipped with a muon
hodoscope. The signals from muon-decay electrons and the evolution of the
charge with water level are also studied.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:24:04 GMT"
},
{
"version": "v2",
"created": "Tue, 12 Jun 2007 20:51:37 GMT"
}
] | 2019-08-13T00:00:00 | [
[
"Ghia",
"Piera L.",
"",
"for the Pierre Auger Collaboration"
]
] |
0706.1213 | Hannah Worters | H. L. Worters, S. P. S Eyres, G. E. Bromage and J. P. Osborne | Resumption of mass accretion in RS Oph | 5 pages, 5 figures, accepted for publication in MNRAS | Mon.Not.Roy.Astron.Soc.379:1557-1561,2007 | 10.1111/j.1365-2966.2007.12066.x | null | astro-ph | null | The latest outburst of the recurrent nova RS Oph occurred in 2006 February.
Photometric data presented here show evidence of the resumption of optical
flickering, indicating re-establishment of accretion by day 241 of the
outburst. Magnitude variations of up to 0.32 mag in V-band and 0.14 mag in B on
timescales of 600-7000 s are detected. Over the two week observational period
we also detect a 0.5 mag decline in the mean brightness, from V~11.4 to V~11.9,
and record B~12.9 mag. Limits on the mass accretion rate of ~10^{-10} to
10^{-9} Msun/yr are calculated, which span the range of accretion rates modeled
for direct wind accretion and Roche lobe overflow mechanisms. The current
accretion rates make it difficult for thermonuclear runaway models to explain
the observed recurrence interval, and this implies average accretion rates are
typically higher than seen immediately post-outburst.
| [
{
"version": "v1",
"created": "Fri, 8 Jun 2007 17:26:14 GMT"
}
] | 2008-11-26T00:00:00 | [
[
"Worters",
"H. L.",
""
],
[
"Eyres",
"S. P. S",
""
],
[
"Bromage",
"G. E.",
""
],
[
"Osborne",
"J. P.",
""
]
] |
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