Regularizing cosmological singularities by varying physical constants

Abstract

Varying physical constant cosmologies were claimed to solve standard cosmological problems such as the horizon, the flatness and the $\Lambda$-problem. In this paper, we suggest yet another possible application of these theories: solving the singularity problem. By specifying some examples we show that various cosmological singularities may be regularized provided the physical constants evolve in time in an appropriate way.

9 pages, 6 figures, Revtex4-1, an improved version to appear in JCAP

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