About
Neutrinos are ubiquitous in cosmology and they always represent a substantial fraction of the energy density of the Universe. This makes cosmology a key arena to test the properties of the most elusive particles in the Standard Model. In this talk, I will begin by first reviewing the various ways in which neutrinos impact cosmological observables. I will discuss the origin of the cosmic neutrino background, and how neutrino physics can alter BBN and the CMB. I will then discuss three topics that I find timely in the context of precision cosmology, namely: 1) what is the value of Neff in the Standard Model and how do we calculate it, 2) what can cosmological observations tell us about BSM neutrino interactions, and 3) how robust are the very stringent cosmological neutrino mass bounds. .
0:00:00 Slide 1
0:02:33 Slide 2
0:05:52 Slide 3
0:07:38 Slide 4
0:09:29 Slide 5
0:10:46 Slide 6
0:11:49 Slide 7
0:13:12 Slide 8
0:14:38 Slide 9
0:21:02 Slide 10
0:22:30 Slide 11
The talk
Credits and licence
- Institution
- CERN
- Department
- Theory Colloquia
- Speaker
- Miguel Escudero Abenza
- Year
- 2024
- Language
- English
- Subjects
- Astronomy and space
- Source
- CERN
- Licence
- CERN, as CERN states it. CERN's terms
- Attribution
- © CERN. CERN provides its audiovisual media free of charge for educational and informational use, credited to CERN; this lecture is shown in CERN's own player.
- Who can watch
- CERN gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed