Inflaton Decay in Supergravity

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dc.creatorEndo, Motoi
dc.creatorTakahashi, Fuminobu
dc.creatorYanagida, T. T.
dc.date2007-06-07
dc.date2007-08-17
dc.date.accessioned2026-07-07T11:16:41Z
dc.date.available2026-07-07T11:16:41Z
dc.descriptionWe discuss inflaton decay in supergravity, taking account of the gravitational effects. It is shown that, if the inflaton has a nonzero vacuum expectation value, it generically couples to any matter fields that appear in the superpotential at the tree level, and to any gauge sectors through anomalies in the supergravity. Through these processes, the inflaton generically decays into the supersymmetry breaking sector, producing many gravitinos. The inflaton also directly decays into a pair of the gravitinos. We derive constraints on both inflation models and supersymmetry breaking scenarios for avoiding overproduction of the gravitinos. Furthermore, the inflaton naturally decays into the visible sector via the top Yukawa coupling and SU(3)_C gauge interactions.
dc.description41 pages, 5 figures. v2: references and supplementary sections added, a version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/0706.0986
dc.identifierhttp://arxiv.org/abs/0706.0986
dc.identifierPhys.Rev.D76:083509,2007
dc.identifierdoi:10.1103/PhysRevD.76.083509
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192756
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleInflaton Decay in Supergravity
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