Anomaly-Induced Inflaton Decay and Gravitino-Overproduction Problem

Details Anomaly-Induced Inflaton Decay and Gravitino-Overproduction Problem Anomaly-Induced Inflaton Decay and Gravitino-Overproduction Problem

2007-01-05

arxiv.org/abs/hep-ph/0701042v3

Phys.Lett.B658:236,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure; v3: arguments clarified

Scientific paper

10.1016/j.physletb.2007.09.019

We point out that the inflaton spontaneously decays into any gauge bosons and gauginos via the super-Weyl, Kahler and sigma-model anomalies in supergravity, once the inflaton acquires a non-vanishing vacuum expectation value. In particular, in the dynamical supersymmetry breaking scenarios, the inflaton necessarily decays into the supersymmetry breaking sector, if the inflaton mass is larger than the dynamical scale. This generically causes the overproduction of the gravitinos, which severely constrains the inflation models.

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