Nagoya University
Theoretical Elementary Particle Physics Laboratory

Date&Time Wed Jan 15 2020 (13:30 - 14:30)
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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