The Gravitino-Overproduction Problem in Inflaton Decay

Details The Gravitino-Overproduction Problem in Inflaton Decay The Gravitino-Overproduction Problem in Inflaton Decay

2006-11-13

arxiv.org/abs/hep-ph/0611166v1

AIPConf.Proc.903:677-680,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figre; to appear in Proceedings of SUSY06, the 14th International Conference on Supersymmetry and the Unification o

Scientific paper

10.1063/1.2735274

We show that the gravitino-overproduction problem is prevalent among inflation models in supergravity. An inflaton field generically acquires (effective) non-vanishing auxiliary field, if the Kahler potential is non-minimal. The inflaton field then decays into a pair of the gravitinos, thereby severely constraining many of the inflation models especially in the case of the gravity-mediated SUSY breaking.

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