Bouncing Cosmologies and Self-Gravitational Corrections
Abstract
A four-dimensional timelike brane is considered as the boundary of the bulk background. Exploiting the CFT/FRW-cosmology relation, we derive the self-gravitational corrections to the first Friedmann-like equation which is the equation of the brane motion. The additional term that arises due to the semiclassical analysis, can be viewed as stiff matter where the self-gravitational corrections act as the source for it. This result is contrary to standard analysis that regards the charge of bulk black hole as the source for stiff matter. A very interesting feature of the solutions of FRW equation is that they all (for ) have a non-vanishing minimum value for the scale factor.
Cite
@article{arxiv.hep-th/0409055,
title = {Bouncing Cosmologies and Self-Gravitational Corrections},
author = {M. R. Setare},
journal= {arXiv preprint arXiv:hep-th/0409055},
year = {2009}
}
Comments
10 pages, no figures, clarifying comments added, no physics changed, version to appear in PLB