String creation in cosmologies with a varying dilaton

Details String creation in cosmologies with a varying dilaton String creation in cosmologies with a varying dilaton

2004-02-19

arxiv.org/abs/hep-th/0402156v1

Nucl.Phys. B689 (2004) 243-256

Physics

High Energy Physics

High Energy Physics - Theory

15 pages, latex, one figure

Scientific paper

10.1016/j.nuclphysb.2004.04.014

FRW solutions of the string theory low-energy effective actions are described, yielding a dilaton which first decreases and then increases. We study string creation in these backgrounds and find an exponential divergence due to an initial space-like singularity. We conjecture that this singularity may be removed by the effects of back-reaction, leading to a solution which at early times is de Sitter space.

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