D-brane worlds and the cosmological constant

Details D-brane worlds and the cosmological constant D-brane worlds and the cosmological constant

2008-09-02

arxiv.org/abs/0809.0380v1

Mod.Phys.Lett.A21:213-229,2006

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

10.1142/S0217732306019438

The cosmological constant on a D-brane is analyzed. This D-brane is in the background produced by the p-brane solutions. The energy-momentum tensor in this model has been found and the form of the cosmological constant has been derived. This energy-momentum tensor is interpreted as an energy-momentum tensor for a perfect fluid on the D-brane. The energy density and the pressure for this fluid have been derived. As it turned out the pressure is negative but the speed of sound is real.

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