Moduli Stabilization in Brane Gas Cosmology with Superpotentials
arXiv:hep-th/0505151 · doi:10.1088/1475-7516/2005/08/012
Abstract
In the context of brane gas cosmology in superstring theory, we show why it is impossible to simultaneously stabilize the dilaton and the radion with a general gas of strings (including massless modes) and D-branes. Although this requires invoking a different mechanism to stabilize these moduli fields, we find that the brane gas can still play a crucial role in the early universe in assisting moduli stabilization. We show that a modest energy density of specific types of brane gas can solve the overshoot problem that typically afflicts potentials arising from gaugino condensation.
minor changes to match the journal version
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