Theory Seminar (High Energy/Cosmology) |
Events During the Week of February 28th through March 7th, 2021
Monday, March 1st, 2021
- No events scheduled
Tuesday, March 2nd, 2021
- No events scheduled
Wednesday, March 3rd, 2021
- No events scheduled
Thursday, March 4th, 2021
- No events scheduled
Friday, March 5th, 2021
- Long Range Interactions in Cosmology: Implications for Neutrinos
- Time: 2:00 pm
- Place: For zoom link, sign up at: https://groups.google.com/a/g-groups.wisc.edu/d/forum/theoryseminars/join
- Speaker: Jordi Salvadó, University of Barcelona
- Abstract: Cosmology is well suited to study the effects of long range interactions due to the large densities in the early Universe. In this talk, we will explore how the energy density and equation of state of a fermion system diverge from the commonly assumed ideal gas form under the presence of scalar long range interactions with a range much smaller than cosmological scales. In this scenario, “small”-scale physics can impact our largest-scale observations. We will apply the formalism to self-interacting neutrinos, performing an analysis to present and future cosmological data. The results will show that the current cosmological neutrino mass bound is fully avoided in the presence of a long range interaction, opening the possibility for a laboratory neutrino mass detection in the near future. We will also see an interesting complementarity between neutrino laboratory experiments and the future EUCLID survey.
- Host: Lars Aalsma