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Fate of classical tensor inhomogeneities in pre-big-bang string cosmology

Buonanno, Alessandra and Damour, Thibault (2001) Fate of classical tensor inhomogeneities in pre-big-bang string cosmology. Physical Review D, 64 (4). Art. No. 043501. ISSN 2470-0010. https://resolver.caltech.edu/CaltechAUTHORS:BUOprd01

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Abstract

In pre-big-bang string cosmology one uses a phase of dilaton-driven inflation to stretch an initial (microscopic) spatial patch to the (much larger) size of the big-bang fireball. We show that the dilaton-driven inflationary phase does not naturally iron out the initial classical tensor inhomogeneities unless the initial value of the string coupling is smaller than gin≲10^-35.


Item Type:Article
Additional Information:©2001 The American Physical Society Received 26 February 2001; published 6 July 2001 We are grateful to Gabriele Veneziano for useful conversations and stimulating comments concerning the homogeneity problem in ordinary inflation. We thank David Langlois and Maurizio Gasperini for useful conversations and/or remarks. A.B.’s research was supported by the Caltech’s Richard Chace Tolman Fund and by NSF Grant No. AST-9731698 and NASA Grant No. NAG5-6840.
Issue or Number:4
Record Number:CaltechAUTHORS:BUOprd01
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:BUOprd01
Alternative URL:http://dx.doi.org/10.1103/PhysRevD.64.043501
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1896
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:22 Feb 2006
Last Modified:02 Oct 2019 22:48

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