D-brane worlds and the cosmological constant
High Energy Physics - Theory
2008-11-26 v1
Abstract
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.
Cite
@article{arxiv.0809.0380,
title = {D-brane worlds and the cosmological constant},
author = {P. Gusin and J. Warczewski},
journal= {arXiv preprint arXiv:0809.0380},
year = {2008}
}