Spontaneous Non-thermal Leptogenesis in High-scale Inflation Models

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dc.creatorEndo, Motoi
dc.creatorTakahashi, Fuminobu
dc.creatorYanagida, T. T.
dc.date2006-11-06
dc.date2006-12-12
dc.date.accessioned2026-07-07T10:25:55Z
dc.date.available2026-07-07T10:25:55Z
dc.descriptionWe argue that a non-thermal leptogenesis occurs spontaneously, without direct couplings of the inflaton with right-handed neutrinos, in a wide class of high-scale inflation models such as the chaotic and hybrid inflation. It is only a finite vacuum expectation value of the inflaton, or more precisely, a linear term in the Kahler potential, that is a prerequisite for the spontaneous non-thermal leptogenesis. To exemplify how it works, we show that a chaotic inflation model in supergravity naturally produces a right amount of baryon asymmetry via the spontaneous non-thermal leptogenesis. We also discuss the gravitino production from the inflaton.
dc.description18 pages, 1 figure. v2: references added, accepted for publication in PRD
dc.identifierhttps://arxiv.org/abs/hep-ph/0611055
dc.identifierhttp://arxiv.org/abs/hep-ph/0611055
dc.identifierPhys.Rev.D74:123523,2006
dc.identifierdoi:10.1103/PhysRevD.74.123523
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/176704
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleSpontaneous Non-thermal Leptogenesis in High-scale Inflation Models
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