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arXiv · hep-th/0109137

Low-energy graceful exit in anisotropic string cosmology backgrounds

G. De Risi·M. Gasperini
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Abstract

We discuss the possibility of a smooth transition from the pre- to the post-big bang regime, in the context of the lowest-order string effective action (without higher-derivative corrections), taking into account with a phenomenological model of source the repulsive gravitational effects due to the back-reaction of the quantum fluctuations outside the horizon. We determine a set of necessary conditions for a successful and realistic transition, and we find that such conditions can be satisfied (by an appropriate model of source), provided the background is higher-dimensional and anisotropic.

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G. De Risi, M. Gasperini. 2001-09-18. Low-energy graceful exit in anisotropic string cosmology backgrounds. https://doi.org/10.1016/s0370-2693(01)01201-1

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