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The Gravitino-Overproduction Problem in Inflaton Decay

Masahiro Kawasaki·Fuminobu Takahashi·T. T. Yanagida
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Abstract

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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Masahiro Kawasaki, Fuminobu Takahashi, T. T. Yanagida. 2006-11-13. The Gravitino-Overproduction Problem in Inflaton Decay. https://doi.org/10.1063/1.2735274

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