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arXiv · 0901.4608

Open Strings on D-Branes and Hagedorn Regime in String Gas Cosmology

Ayse Arslanargin·Ali Kaya
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Abstract

We consider early time cosmic evolution in string gas cosmology dominated by open strings attached to D-branes. After reviewing statistical properties of open strings in D-brane backgrounds, we use dilaton-gravity equations to determine the string frame fields. Although, there are distinctions in the Hagedorn regime thermodynamics and dilaton coupling as compared to closed strings, it seems difficult to avoid Jeans instability and assume thermal equilibrium simultaneously, which is already a known problem for closed strings. We also examine characteristics of a possible subsequent large radius regime in this setup.

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Ayse Arslanargin, Ali Kaya. 2009-03-16. Open Strings on D-Branes and Hagedorn Regime in String Gas Cosmology. https://doi.org/10.1103/physrevd.79.066013

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