INFLATION, DEFLATION, AND FRAME-INDEPENDENCE IN STRING COSMOLOGY

21 December 1993

journal article
Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters A

Vol. 8 (39) , 3701-3713
https://doi.org/10.1142/s0217732393003433

Abstract

The inflationary scenarios suggested by the duality properties of string cosmology in the Brans-Dicke (or string) frame are shown to correspond to accelerated contraction (deflation) when Weyl transformed to the Einstein frame. We point out that the basic virtues of inflation (solving the flatness and horizon problems, amplifying vacuum fluctuations, etc.) have physically equivalent counterparts in the deflationary (Einstein-frame) picture. This could be the answer to some objections recently raised to superstring cosmology.

Keywords

INFLATION
STRING COSMOLOGY
DEFLATION
VIRTUES
DICKE
FRAME INDEPENDENCE
EINSTEIN FRAME

All Related Versions

Version 1, 1993-09-03, ArXiv

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