Exact solutions in two-dimensional string cosmology with back reaction

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.56.R4444· OSTI ID:632718

Bose, S; Kar, S ^[1]

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1. Inter--University Centre for Astronomy and Astrophysics, Post Bag 4, Ganeshkhind, Pune, 411 007 (India)

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 {open_quotes}pre-big-bang{close_quotes} epoch and is singular at {tau}=0. In either case back reaction is shown to play a crucial role in determining the specific nature of these geometries. thinsp {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 632718
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 8 Vol. 56; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANALYTICAL SOLUTION
BACKSCATTERING
COSMOLOGY
DUALITY
INFLATIONARY UNIVERSE
QUANTUM GRAVITY
SINGULARITY
STRING MODELS
TWO-DIMENSIONAL CALCULATIONS