Graceful Exit in String Cosmology

Details Graceful Exit in String Cosmology Graceful Exit in String Cosmology

1997-11-18

arxiv.org/abs/hep-th/9711134v1

Hadronic J.21:202-208,1998

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, LateX. Contribution to the proceedings of the workshop Modern Modified Theories of Gravitation and Cosmology, 29-30 J

Scientific paper

The graceful exit transition from a dilaton-driven inflationary phase to a decelerated Friedmann-Robertson-Walker era requires certain classical and quantum corrections to the string effective action. Classical corrections can stabilize a high curvature string phase while the evolution is still in the weakly coupled regime, and quantum corrections can induce violation of the null energy condition, allowing evolution towards a decelerated phase.

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