Bouncing Cosmologies and Self-Gravitational Corrections

Details Bouncing Cosmologies and Self-Gravitational Corrections Bouncing Cosmologies and Self-Gravitational Corrections

2004-09-04

arxiv.org/abs/hep-th/0409055v2

Phys.Lett. B602 (2004) 1-7

Physics

High Energy Physics

High Energy Physics - Theory

10 pages, no figures, clarifying comments added, no physics changed, version to appear in PLB

Scientific paper

10.1016/j.physletb.2004.09.062

A four-dimensional timelike brane is considered as the boundary of the $SAdS_{5}$ 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 $SAdS_{5}$ bulk black hole as the source for stiff matter. A very interesting feature of the solutions of FRW equation is that they all (for $k=0,\pm1$) have a non-vanishing minimum value for the scale factor.

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