Accelerating Cosmologies from S-Branes
High Energy Physics - Theory
2008-11-26 v6 Astrophysics
General Relativity and Quantum Cosmology
Abstract
We point out that the recently proposed model of a flat 4-dimensional universe with accelerated expansion in string/M-theory is a special case of time-dependent solutions that the author found under the name of ``S-branes.'' We also show that similar accelerating models can be obtained from S-branes if the internal space is chosen to be hyperbolic or flat spaces.
Cite
@article{arxiv.hep-th/0303238,
title = {Accelerating Cosmologies from S-Branes},
author = {Nobuyoshi Ohta},
journal= {arXiv preprint arXiv:hep-th/0303238},
year = {2008}
}
Comments
8 pages, 4 figures, comments added, a typo corrected, final version to appear in Phys. Rev. Lett