The Graceful Exit in String Cosmology

We re-examine the graceful exit problem in the pre-big bang scenario of string cosmology, by considering the most general time-dependent classical correction to the Lagrangian with up to four derivatives. By including possible forms for quantum loop corrections we examine the allowed region of param...

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Detalles Bibliográficos
Autores principales: Cartier, C., Copeland, Edmund J., Madden, R.
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1088/1126-6708/2000/01/035
http://cds.cern.ch/record/404671
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author Cartier, C.
Copeland, Edmund J.
Madden, R.
author_facet Cartier, C.
Copeland, Edmund J.
Madden, R.
author_sort Cartier, C.
collection CERN
description We re-examine the graceful exit problem in the pre-big bang scenario of string cosmology, by considering the most general time-dependent classical correction to the Lagrangian with up to four derivatives. By including possible forms for quantum loop corrections we examine the allowed region of parameter space for the coupling constants which enable our solutions to link smoothly the two asymptotic low-energy branches of the pre-big bang scenario, and observe that these solutions can satisfy recently proposed entropic bounds on viable singularity free cosmologies.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
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spelling cern-4046712021-10-08T02:34:29Zdoi:10.1088/1126-6708/2000/01/035http://cds.cern.ch/record/404671engCartier, C.Copeland, Edmund J.Madden, R.The Graceful Exit in String CosmologyParticle Physics - TheoryWe re-examine the graceful exit problem in the pre-big bang scenario of string cosmology, by considering the most general time-dependent classical correction to the Lagrangian with up to four derivatives. By including possible forms for quantum loop corrections we examine the allowed region of parameter space for the coupling constants which enable our solutions to link smoothly the two asymptotic low-energy branches of the pre-big bang scenario, and observe that these solutions can satisfy recently proposed entropic bounds on viable singularity free cosmologies.We re-examine the graceful exit problem in the pre-big bang scenario of string cosmology, by considering the most general time-dependent classical correction to the Lagrangian with up to four derivatives. By including possible forms for quantum loop corrections we examine the allowed region of parameter space for the coupling constants which enable our solutions to link smoothly the two asymptotic low-energy branches of the pre-big bang scenario, and observe that these solutions can satisfy recently proposed entropic bounds on viable singularity free cosmologies.hep-th/9910169SUSX-TH-99-018SUSX-TH-99-018oai:cds.cern.ch:4046711999-10-22
spellingShingle Particle Physics - Theory
Cartier, C.
Copeland, Edmund J.
Madden, R.
The Graceful Exit in String Cosmology
title The Graceful Exit in String Cosmology
title_full The Graceful Exit in String Cosmology
title_fullStr The Graceful Exit in String Cosmology
title_full_unstemmed The Graceful Exit in String Cosmology
title_short The Graceful Exit in String Cosmology
title_sort graceful exit in string cosmology
topic Particle Physics - Theory
url https://dx.doi.org/10.1088/1126-6708/2000/01/035
http://cds.cern.ch/record/404671
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AT maddenr thegracefulexitinstringcosmology
AT cartierc gracefulexitinstringcosmology
AT copelandedmundj gracefulexitinstringcosmology
AT maddenr gracefulexitinstringcosmology

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