The energy-momentum tensor of perturbed tachyon matter
High Energy Physics - Theory
2009-05-15 v2 General Relativity and Quantum Cosmology
Abstract
We add an initial nonhomogeneous perturbation to an otherwise homogeneous condensing tachyon background and compute its space time energy-momentum tensor from worldsheet string theory. We show that in the far future the energy-momentum tensor corresponds to nonhomogeneous pressureless tachyon matter.
Keywords
Cite
@article{arxiv.0901.3368,
title = {The energy-momentum tensor of perturbed tachyon matter},
author = {Niko Jokela and Matti Jarvinen and Esko Keski-Vakkuri},
journal= {arXiv preprint arXiv:0901.3368},
year = {2009}
}
Comments
8 pages. v2: minor corrections, to appear in PRD