A Study of Accelerating Cosmologies from Superstring/M theories
High Energy Physics - Theory
2011-05-05 v3 Astrophysics
General Relativity and Quantum Cosmology
Abstract
We study aspects of the accelerating cosmologies obtained from the compactification of vacuum solution and S2-branes of superstring/M theories. Parameter dependence of the resulting expansion of our universe and internal space is examined for all cases. We find that accelerating expansions are obtained also from spherical internal spaces, albeit the solution enters into contracting phase eventually. The relation between the models of SM2- and SD2-branes are also discussed, and a potential problem with SD2-brane model is noted.
Keywords
Cite
@article{arxiv.hep-th/0304172,
title = {A Study of Accelerating Cosmologies from Superstring/M theories},
author = {Nobuyoshi Ohta},
journal= {arXiv preprint arXiv:hep-th/0304172},
year = {2011}
}
Comments
20 pages, 17 figures, a typo corrected, to be published in Prog. Theor. Phys