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Neutrino masses from cosmology: cosmological degeneracies and systematic biases
Speaker
Aoife Boyle Institut d'Astrophysique de Paris (France)
Abstract
For the foreseeable future, the best constraints on the total neutrino mass will be provided by cosmology. However, such measurements are inherently very complicated, particularly because of significant cosmological degeneracies. In my talk, I will discuss how existing and projected neutrino mass constraints are significantly weakened by a variety of extensions beyond flat Λ-CDM and by non-linear galaxy bias parameters. I will also discuss the prospects for a cosmology-independent neutrino mass measurement that could potentially be performed by isolating the effects of neutrino free-streaming in the power spectrum. Finally, I will discuss my recent work on higher order statistics, particularly in the context of large deviation theory, a powerful tool that gives analytical results from first principles for probability distribution functions in the quasi-linear regime.
Date and Time
May 13 2021 4pm KST (= 7am UTC)