Seminar detail: Gravitational production of right-handed neutrino after quintessential inflation

Date&Time	Wed Jan 15 2020 (13:30 - 14:30)
Speaker	Soichiro Hashiba
Affiliation	Tokyo U., RESCEU
Title	Gravitational production of right-handed neutrino after quintessential inflation
Abstract	Incorporating three generations of right-handed Majorana neutrinos to quintessen- tial inflation, we have constructed a model which simultaneously explains infla- tion, dark energy, reheating, dark matter and baryogenesis. These right-handed neutrinos are produced by the gravitational particle production, induced by a time-varying metric in the kination regime after inflation. They have somewhat hierarchical masses and the heaviest, the intermediate and the lightest one account for reheating, CP violation of leptogenesis, and dark matter, respectively.This talk is mainly based on our recent paper, Phys. Lett. B798 (2019) 135024 (arXiv:1905.12423 [hep-ph]).
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