PREPRINT
2A6DEE40-5BF8-4BCE-A3A2-E90215DA84EC

Inflation Deflation and Frame-Independence in String Cosmology

M Gasperini, G Veneziano
arXiv:hep-th/9309023

Submitted on 3 September 1993

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.

Preprint

Comment: 14 pages, CERN-TH.6955/93

Subjects: High Energy Physics - Theory; Astrophysics; General Relativity and Quantum Cosmology

URL: https://arxiv.org/abs/hep-th/9309023