text: 278,66,1394921931380559872,1238481001304686594,Pablo Martínez-Miravé,"New paper today! With @MariamTortola @spastorcarpi @PFdeSalas and Stefano Gariazzo ""Cosmological radiation density with non-standard neutrino-electron interactions"" <LINK> We study how NSI with electrons alter the picture of neutrino decoupling <LINK> We address the variation on the effective number of neutrinos in the presence of NSI, including the effect in oscillations, annihilation and scattering between neutrinos and electrons and positrons. <LINK> We also show that future cosmological data would complement terrestrial experiments (and even provide competitive constraints in some of the couplings)! And most importantly, I really enjoyed learning and working with these great collaborators!  😃😃😃😃😃",https://arxiv.org/abs/2105.08168,"Neutrino non-standard interactions (NSI) with electrons are known to alter the picture of neutrino decoupling from the cosmic plasma. NSI modify both flavour oscillations through matter effects, and the annihilation and scattering between neutrinos and electrons and positrons in the thermal plasma. In view of the forthcoming cosmological observations, we perform a precision study of the impact of non-universal and flavour-changing NSI on the effective number of neutrinos, $N_{eff}$. We present the variation of $N_{eff}$ arising from the different NSI parameters and discuss the existing degeneracies among them, from cosmology alone and in relation to the current bounds from terrestrial experiments. Even though cosmology is generally less sensitive to NSI than these experiments, we find that future cosmological data would provide competitive and complementary constraints for some of the couplings and their combinations. ","Cosmological radiation density with non-standard neutrino-electron