D-brane Gases and Stabilization of Extra Dimensions in Dilaton Gravity

Details D-brane Gases and Stabilization of Extra Dimensions in Dilaton Gravity D-brane Gases and Stabilization of Extra Dimensions in Dilaton Gravity

2004-09-08

arxiv.org/abs/hep-th/0409094v1

Phys.Lett. B603 (2004) 107-112

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, 3 figures

Scientific paper

10.1016/j.physletb.2004.10.028

We consider a toy cosmological model with a gas of wrapped Dp-branes in 10-dimensional dilaton gravity compactified on a p-dimensional Ricci flat internal manifold. A consistent generalization of the low energy effective field equations in the presence of a conserved brane source coupled to dilaton is obtained. It is then shown that the compact dimensions are dynamically stabilized in string frame as a result of a balance between negative winding and positive momentum pressures. Curiously, when p=6, i.e. when the observed space is three dimensional, the dilaton becomes a constant and stabilization in Einstein frame is also realized.

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