Constraining neutrino physics with cosmological observations

por Massimiliano Lattanzi (ICRA Rome)

viernes 27 ene. 2006 12:00 → 13:00 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

According to the standard model of cosmology, a thermal background of relic neutrinos at T=1.9 K fills up the present Universe, in a similar way as the photons of the cosmic microwave background radiation do. The presence and the properties of this neutrino background affect the cosmological evolution; this means in turn that cosmological observations can be used to indirectly measure their properties. In particular, we can obtain informations about the neutrino mass and about non-standard features, such as the presence of large cosmological lepton asymmetry.