The Polonyi Problem and Upper bound on Inflation Scale in Supergravity

Details The Polonyi Problem and Upper bound on Inflation Scale in Supergravity The Polonyi Problem and Upper bound on Inflation Scale in Supergravity

2006-05-24

arxiv.org/abs/hep-ph/0605252v2

Phys.Lett. B639 (2006) 534-540

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 1 figure, minor corrections, published version

Scientific paper

10.1016/j.physletb.2006.06.041

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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