On The Varying Speed of Light in a Brane-Induced FRW Universe

Abstract

We investigate a string/M theoretic realization of the varying speed of light scenario. We consider a 3+1 dimensional probe-brane universe in the background of a black hole in the bulk formed by a stack of branes, in the spirit of Kiritsis (hep-th/9906206). We generalize the dynamics of the system at hand by including rotation and Hubble damping of the bulk space-time and show that this may lead to a mechanism to stabilize the brane-universe and hence fix the speed of light at late times.

arXiv comment6 Pages Revised Version: Additional references included. Circular Geodesic found for speed of light stabilization

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