Gravitino Overproduction in Inflaton Decay

By M. Kawasaki, F. Takahashi, T. Yanagida. 2006

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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 constraining many of the inflation models severely especially in the case of the gravity‐mediated SUSY breaking.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/225c9ec1062f3820013b400d7b4963620ad1d823