Affleck-Dine baryogenesis in large extra dimensions

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Abstract
Baryogenesis in models in which the fundamental scale is as low as 1 TeV in the context of large extra dimensions is a challenging problem. The requirement for the departure from thermal equilibrium necessarily ties any low-scale baryogenesis with that of a successful inflationary model, which automatically provides the out-of-equilibrium condition after the end of inflation. However, it is also noticeable that in these models the reheat temperature of the Universe is strongly constrained from the overproduction of Kaluza-Klein modes, which enforces a very low reheat temperature. In this paper, we describe a possible scenario for baryogenesis which has similar characteristics to an Affleck-Dine field. We notice that in order to have an adequate baryon to entropy ratio, one must to promote this Affleck-Dine field to reside in the bulk.