Theory Seminar (High Energy/Cosmology)

<< Fall 2020 Spring 2021 Summer 2021 >>
Subscribe your calendar or receive email announcements of events

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 - 3:00 pm
Place: For zoom link, sign up at:
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
Add this event to your calendar