On T-Duality in Brane Gas Cosmology
High Energy Physics - Theory
2009-11-07 v2 High Energy Physics - Phenomenology
Abstract
In the context of homogeneous and isotropic superstring cosmology, the T-duality symmetry of string theory has been used to argue that for a background space-time described by dilaton gravity with strings as matter sources, the cosmological evolution of the Universe will be nonsingular. In this Letter we discuss how T-duality extends to brane gas cosmology, an approximation in which the background space-time is again described by dilaton gravity with a gas of branes as a matter source. We conclude that the arguments for nonsingular cosmological evolution remain valid.
Cite
@article{arxiv.hep-th/0208188,
title = {On T-Duality in Brane Gas Cosmology},
author = {Timon Boehm and Robert Brandenberger},
journal= {arXiv preprint arXiv:hep-th/0208188},
year = {2009}
}
Comments
8 pages, Appendix added