Back Reaction and Graceful Exit in String Inflationary Cosmology
- 2 September 1996
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (10) , 1929-1932
- https://doi.org/10.1103/physrevlett.77.1929
Abstract
Classical string cosmology consists of two branches related to each other by scale-factor duality: a super-inflation branch and a Friedmann-Robertson-Walker (FRW) branch. Curvature and string coupling singularity separates the two branches, hence posing `graceful exit problem' to super-inflationary string cosmology. In an exactly soluble two-dimensional compactification model it is shown that quantum back reaction retards curvature and string coupling growth and connects the super-inflation branch to the FRW branch without encountering a singularity. This may offer an attractive solution to the `graceful exit problem' in string inflationary cosmology.Keywords
All Related Versions
This publication has 21 references indexed in Scilit:
- Tree-level string cosmologyPhysical Review D, 1996
- Towards a singularity-free inflationary universe?Nuclear Physics B, 1995
- Dilaton production in string cosmologyPhysical Review D, 1994
- The graceful exit problem in string cosmologyPhysics Letters B, 1994
- INFLATION, DEFLATION, AND FRAME-INDEPENDENCE IN STRING COSMOLOGYModern Physics Letters A, 1993
- Pre-big-bang in string cosmologyAstroparticle Physics, 1993
- Scale factor duality for classical and quantum stringsPhysics Letters B, 1991
- Chaotic inflationPhysics Letters B, 1983
- Cosmology for Grand Unified Theories with Radiatively Induced Symmetry BreakingPhysical Review Letters, 1982
- Inflationary universe: A possible solution to the horizon and flatness problemsPhysical Review D, 1981