Descrizione
Chair: Kate Scholberg
The increasing precision of cosmological observations has opened a new window for studying neutrinos.
After reviewing current cosmological constraints on neutrino properties, I will show the potential of forthcoming large-scale structure data from the ESA Euclid mission to detect the neutrino mass sum and provide insights into the existence of light particles beyond the Standard Model.
In its first year of operation, the Dark Energy Spectroscopic Instrument (DESI) has measured the spectra of more than 6 million extragalactic objects. These spectra enable precision measurements of the large-scale distribution of matter in the Universe. One of the key measurements made by DESI is that of the baryon acoustic oscillation scale, which, in combination with measurements of the...
In this talk I review the meaning of cosmological bounds on two important quantities, the effective number of relativistic species Neff and the sum of neutrino masses, and their relation with fundamental neutrino properties. I discuss several non-standard scenarios where Neff can be significantly altered (much larger or much smaller than 3), and also scenarios which barely change its value....
