One-Loop Superstring Cosmology and the Non-Singular Universe

Details One-Loop Superstring Cosmology and the Non-Singular Universe One-Loop Superstring Cosmology and the Non-Singular Universe

1996-05-23

arxiv.org/abs/hep-th/9605173v2

Phys.Rev. D54 (1996) 7252-7260

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, 3 figures (postscript), Latex2e, discussion of curvature invariants added. To appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.54.7252

We study the cosmological implications of the one-loop terms in the string expansion. In particular, we find non-singular solutions which interpolate between a contracting universe and an expanding universe, and show that these solutions provide a mechanism for removing the initial conditions problem peculiar to spatially closed FRW cosmologies. In addition, we perform numerical calculations to show that the non-singular cosmologies do not require a careful choice of initial conditions, and estimate the likely magnitude of higher order terms in the string expansion.

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