Exact solutions in two-dimensional string cosmology with back reaction
High Energy Physics - Theory
2009-12-30 v2 General Relativity and Quantum Cosmology
Abstract
We present analytic cosmological solutions in a model of two-dimensional dilaton gravity with back reaction. One of these solutions exhibits a graceful exit from the inflationary to the FRW phase and is nonsingular everywhere. A duality related second solution is found to exist only in the ``pre-big-bang'' epoch and is singular at . In either case back reaction is shown to play a crucial role in determining the specific nature of these geometries.
Cite
@article{arxiv.hep-th/9705061,
title = {Exact solutions in two-dimensional string cosmology with back reaction},
author = {Sukanta Bose and Sayan Kar},
journal= {arXiv preprint arXiv:hep-th/9705061},
year = {2009}
}
Comments
Shortened slightly, references added, to appear in Physical Review D (Rapid Communications). 16 pages, RevTex, 3 PostScript figures