On the solution to the polonyi problem with O(10 TeV) gravitino mass in supergravity

We study the solution to the Polonyi problem where the Polonyi field weighs as O(10 TeV) and decays just before the primordial nucleosynthesis. It is shown that in spite of a large entropy production by the Polonyi field decay, one can naturally explain the present value of the baryon-to-entropy ratio, nBs ∼ 10−10−10−11 if the Affeck-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 Polonyi decay.