PIRSA:18090036

Video URL

https://pirsa.org/18090036

Weighing neutrinos with cosmological observables

Navarro, F. (2018). Weighing neutrinos with cosmological observables. Perimeter Institute for Theoretical Physics. https://pirsa.org/18090036

Navarro, Francisco. Weighing neutrinos with cosmological observables. Perimeter Institute for Theoretical Physics, Sep. 04, 2018, https://pirsa.org/18090036 

          @misc{ scivideos_PIRSA:18090036,
            doi = {10.48660/18090036},
            url = {https://pirsa.org/18090036},
            author = {Navarro, Francisco},
            keywords = {Cosmology},
            language = {en},
            title = {Weighing neutrinos with cosmological observables},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2018},
            month = {sep},
            note = {PIRSA:18090036 see, \url{https://scivideos.org/index.php/pirsa/18090036}}
          }

Francisco Navarro University of Trieste

Talk numberPIRSA:18090036
DOI10.48660/18090036
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

 One of the most important discoveries of the 20th century has been the finding of neutrino oscillations. That phenomena implies that neutrinos are massive and shows the existence of physics beyond the standard model. Fundamental questions associated to this discovery are: what are the absolute neutrino masses? and what is their hierarchy? In this talk I will discuss how to use cosmological observables to answer these questions. I will first show one of the predictions of the Big Bang theory: the existence of a cosmic neutrino background. I will then present the effects that it introduces on several cosmological observables such as the matter power spectrum, halo/galaxy properties, cluster counts, halo/galaxy clustering and cosmic voids. I will show how to use these effects to weigh neutrinos. I will emphasize the importance of having accurate theory predictions, and to search for new observables, in order to achieve a 5-sigma detection of the minimum sum of the neutrino masses.