On the Solution to the Polonyi Problem with No-Scale Type Supergravity

Details On the Solution to the Polonyi Problem with No-Scale Type Supergravity On the Solution to the Polonyi Problem with No-Scale Type Supergravity

1995-10-25

arxiv.org/abs/hep-ph/9510411v1

Prog.Theor.Phys.Suppl. 123 (1996) 457-466

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the Yukawa International Seminar '95 in Kyoto, 21 - 26 August, 1995

Scientific paper

10.1143/PTPS.123.457

We study the solution to the Polonyi problem in the framework of no-scale type supergravity. In such a model, Polonyi field can weigh as $O(10{\rm TeV})$ and decay just before the big-bang nucleosynthesis. It is shown that in spite of a large entropy production by the decay of the Polonyi field, one can naturally explain the present value of the baryon-to-entropy ratio, $n_B/s \sim (10^{-10}-10^{-11})$ if the Affleck-Dine mechanism for baryogenesis works. It is pointed out, however, that there is another cosmological problem related to the abundance of the lightest superparticles produced by the decay of the Polonyi field.

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