Constraint on the Reheating Temperature from the Decay of the Polonyi Field

Details Constraint on the Reheating Temperature from the Decay of the Polonyi Field Constraint on the Reheating Temperature from the Decay of the Polonyi Field

1995-09-26

arxiv.org/abs/hep-ph/9509399v1

Phys.Lett.B370:52-58,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1016/0370-2693(95)01546-9

We study the Polonyi problem in the framework of no-scale type supergravity models. We show that the lightest superparticle (LSP) produced in the decay of the Polonyi field may contribute too much to the present density of the universe. By requiring that LSP should not overclose the universe, we obtain a stringent constraint on the reheating temperature after the decay of the Polonyi field. We calculate the LSP density with physical parameters obtained by solving renormalization group equations in the minimal supersymmetric SU(5) model and find that the reheating temperature should be greater than about 100MeV which corresponds to $O$(100)TeV of the Polonyi mass.

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