Feb 18 – 26, 2021
Europe/Rome timezone

Neutrino thermalization in the early universe: precision calculations

Feb 22, 2021, 5:30 PM
Room 3 (https://unipd.link/NeuTel-ParallelRoom3)

Room 3


Parallel Contributed Talk Neutrino Theory and Cosmology Non Standard Interactions and Cosmology


Stefano Gariazzo (INFN Torino)


In this talk I will discuss the calculation of neutrino oscillations in the early Universe and of the neutrino thermalization, quantified in particular by the effective number of neutrinos (Neff). Precision calculations of Neff are important in light of the future improvements in the experimental determinations. I will briefly review the state-of-art numerical results and discuss the theoretical expectations for Neff in different scenarios: the standard three-neutrinos case, a case with an additional light sterile neutrino and a non-standard scenario with low-reheating.

Primary author

Stefano Gariazzo (INFN Torino)

Presentation materials