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The Polonyi Problem and Upper bound on Inflation Scale in Supergravity

M. Ibe·Y. Shinbara·T. T. Yanagida
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Abstract

We reconsider the Polonyi problem in gravity-mediation models for supersymmetry (SUSY) breaking. It has been argued that there is no problem in the dynamical SUSY breaking scenarios, since the Polonyi field acquires a sufficiently large mass of the order of the dynamical SUSY-breaking scale Lamada_{SUSY}. However, we find that a linear term of the Polonyi field in the Kahler potential brings us back to the Polonyi problem, unless the inflation scale is sufficiently low, H_{inf} < 10^{8} GeV, or the reheating temperature is extremely low, T_{R} < 100 GeV. Here, this Polonyi problem is more serious than the original one, since the Polonyi field mainly decays into a pair of gravitinos.

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M. Ibe, Y. Shinbara, T. T. Yanagida. 2006-07-07. The Polonyi Problem and Upper bound on Inflation Scale in Supergravity. https://doi.org/10.1016/j.physletb.2006.06.041

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