Perturbations in a non-singular bouncing Universe

We complement the low-energy gravi-dilaton effective action of string theory with a non-local, general-covariant dilaton potential, and obtain homogeneous solutions describing a non-singular (bouncing-curvature) cosmology. We then compute, both analytically and numerically, the spectrum of amplified...

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Detalles Bibliográficos
Autores principales: Gasperini, M, Giovannini, Massimo, Veneziano, Gabriele
Lenguaje:eng
Publicado: 2003
Materias:
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2003.07.028
http://cds.cern.ch/record/621467
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author Gasperini, M
Giovannini, Massimo
Veneziano, Gabriele
author_facet Gasperini, M
Giovannini, Massimo
Veneziano, Gabriele
author_sort Gasperini, M
collection CERN
description We complement the low-energy gravi-dilaton effective action of string theory with a non-local, general-covariant dilaton potential, and obtain homogeneous solutions describing a non-singular (bouncing-curvature) cosmology. We then compute, both analytically and numerically, the spectrum of amplified scalar and tensor perturbations, and draw some general lessons on how to extract observable consequences from pre-big bang and ekpyrotic scenarios.
id cern-621467
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
record_format invenio
spelling cern-6214672019-09-30T06:29:59Zdoi:10.1016/j.physletb.2003.07.028http://cds.cern.ch/record/621467engGasperini, MGiovannini, MassimoVeneziano, GabrielePerturbations in a non-singular bouncing UniverseParticle Physics - TheoryWe complement the low-energy gravi-dilaton effective action of string theory with a non-local, general-covariant dilaton potential, and obtain homogeneous solutions describing a non-singular (bouncing-curvature) cosmology. We then compute, both analytically and numerically, the spectrum of amplified scalar and tensor perturbations, and draw some general lessons on how to extract observable consequences from pre-big bang and ekpyrotic scenarios.hep-th/0306113BA-TH-2003-463CERN-TH-2003-128oai:cds.cern.ch:6214672003-06-12
spellingShingle Particle Physics - Theory
Gasperini, M
Giovannini, Massimo
Veneziano, Gabriele
Perturbations in a non-singular bouncing Universe
title Perturbations in a non-singular bouncing Universe
title_full Perturbations in a non-singular bouncing Universe
title_fullStr Perturbations in a non-singular bouncing Universe
title_full_unstemmed Perturbations in a non-singular bouncing Universe
title_short Perturbations in a non-singular bouncing Universe
title_sort perturbations in a non-singular bouncing universe
topic Particle Physics - Theory
url https://dx.doi.org/10.1016/j.physletb.2003.07.028
http://cds.cern.ch/record/621467
work_keys_str_mv AT gasperinim perturbationsinanonsingularbouncinguniverse
AT giovanninimassimo perturbationsinanonsingularbouncinguniverse
AT venezianogabriele perturbationsinanonsingularbouncinguniverse

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