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arXiv · hep-th/0307138

Brane cosmology with curvature corrections

G. Kofinas·R. Maartens·E. Papantonopoulos
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Abstract

We study the cosmology of the Randall-Sundrum brane-world where the Einstein-Hilbert action is modified by curvature correction terms: a four-dimensional scalar curvature from induced gravity on the brane, and a five-dimensional Gauss-Bonnet curvature term. The combined effect of these curvature corrections to the action removes the infinite-density big bang singularity, although the curvature can still diverge for some parameter values. A radiation brane undergoes accelerated expansion near the minimal scale factor, for a range of parameters. This acceleration is driven by the geometric effects, without an inflaton field or negative pressures. At late times, conventional cosmology is recovered.

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G. Kofinas, R. Maartens, E. Papantonopoulos. 2003-10-29. Brane cosmology with curvature corrections. https://doi.org/10.1088/1126-6708%2F2003%2F10%2F066

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