Theory Seminar (High Energy/Cosmology) |
Events During the Week of October 30th through November 6th, 2022
Monday, October 31st, 2022
- No events scheduled
Tuesday, November 1st, 2022
- Gravitational production of scalar dark matter
- Time: 4:00 pm - 5:00 pm
- Place: Chamberlin 5280
- Speaker: Sarunas Verner, University of Florida
- Abstract: First, I discuss the out-of-equilibrium production of scalar dark matter (DM) from the inflaton condensate during inflation and reheating. Here I assume that this scalar dark matter is only minimally coupled to gravity and consider the regime of purely gravitational dark matter. For the purely gravitational regime, scalar dark matter quanta are copiously excited during inflation resulting in an infrared (IR) dominated distribution function and a relic abundance that overcloses the universe for a reheating temperature T_{reh} > 34 GeV. I discuss the reheating mechanism and compare perturbative and non-perturbative calculations of the energy density in radiation, and compare the resulting energy density based on these different approaches. I also briefly discuss the isocurvature constraints. This talk is based on arXiv:2206.08940 and arXiv:2109.13280.
- Host: George Wojcik
Wednesday, November 2nd, 2022
- No events scheduled
Thursday, November 3rd, 2022
- No events scheduled
Friday, November 4th, 2022
- No events scheduled