PREPRINT
813F7006-335C-4AE9-866C-5E433E8309C8

The Graceful Exit Problem in String Cosmology

R. Brustein, G. Veneziano
arXiv:hep-th/9403060

Submitted on 9 March 1994

Abstract

Isotropic string cosmology solutions can be classified into two duality related branches: one can be connected smoothly to an expanding Friedman-Robertson-Walker Universe, the other describes accelerated inflation or contraction. We show that, if the dilaton potential has certain generic properties, the two branches can evolve smoothly into each other. We find, however, that just the effects of a potential do not allow for a graceful exit from accelerated inflation in the weak curvature regime. We explain how conformal field theory techniques could be used to give a decisive answer on whether graceful exit from accelerated inflation is possible at all.

Preprint

Comment: 13 pages,uuencoded post-script, preprint CERN-TH.7179/94

Subjects: High Energy Physics - Theory; Astrophysics

URL: https://arxiv.org/abs/hep-th/9403060