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  Pre-big bang bubbles from the gravitational instability of generic string vacua

Buonanno, A., Damour, T., & Veneziano, G. (1999). Pre-big bang bubbles from the gravitational instability of generic string vacua. Nuclear Physics B, 543, 275-320. doi:10.1016/S0550-3213(98)00805-0.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8AE9-0 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0019-8AEA-E
Genre: Journal Article

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 Creators:
Buonanno, A.1, 2, Author              
Damour, T., Author
Veneziano, G., Author
Affiliations:
1lnstitut des Hautes Etudes Scientifiques, ou_persistent22              
2Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

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Free keywords: High Energy Physics - Theory, hep-th,Astrophysics, astro-ph,General Relativity and Quantum Cosmology, gr-qc
 Abstract: We formulate the basic postulate of pre-big bang cosmology as one of ``asymptotic past triviality'', by which we mean that the initial state is a generic perturbative solution of the tree-level low-energy effective action. Such a past-trivial ``string vacuum'' is made of an arbitrary ensemble of incoming gravitational and dilatonic waves, and is generically prone to gravitational instability, leading to the possible formation of many black holes hiding singular space-like hypersurfaces. Each such singular space-like hypersurface of gravitational collapse becomes, in the string-frame metric, the usual big-bang t=0 hypersurface, i.e. the place of birth of a baby Friedmann universe after a period of dilaton-driven inflation. Specializing to the spherically-symmetric case, we review and reinterpret previous work on the subject, and propose a simple, scale-invariant criterion for collapse/inflation in terms of asymptotic data at past null infinity. Those data should determine whether, when, and where collapse/inflation occurs, and, when it does, fix its characteristics, including anisotropies on the big bang hypersurface whose imprint could have survived till now. Using Bayesian probability concepts, we finally attempt to answer some fine-tuning objections recently moved to the pre-big bang scenario.

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 Dates: 1998-06-291999
 Publication Status: Published in print
 Pages: 58 pages, RevTex, epsfig, 5 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: hep-th/9806230
DOI: 10.1016/S0550-3213(98)00805-0
URI: http://arxiv.org/abs/hep-th/9806230
 Degree: -

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Title: Nuclear Physics B
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 543 Sequence Number: - Start / End Page: 275 - 320 Identifier: ISSN: 0550-3213
CoNE: /journals/resource/954925564667