Cosmological solutions of higher-curvature string effective theories with dilatons

We study the effect of higher-curvature terms in the string low-energy effective actions on the cosmological solutions of the theory, up to corrections quartic in the curvatures, for the bosonic and heterotic strings as well as the type II superstring. We find that cosmological solutions exist for a...

Descripción completa

Detalles Bibliográficos
Autores principales: Bento, M.C., Bertolami, O.
Lenguaje:eng
Publicado: 1995
Materias:
General Relativity and Cosmology
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(95)01519-1
http://cds.cern.ch/record/279431
_version_ 1780887818923409408
author Bento, M.C.
Bertolami, O.
author_facet Bento, M.C.
Bertolami, O.
author_sort Bento, M.C.
collection CERN
description We study the effect of higher-curvature terms in the string low-energy effective actions on the cosmological solutions of the theory, up to corrections quartic in the curvatures, for the bosonic and heterotic strings as well as the type II superstring. We find that cosmological solutions exist for all string types but they always disappear when the dilaton field is included, a conclusion that can be avoided if string-loop effects are taken into account.
id cern-279431
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1995
record_format invenio
spelling cern-2794312019-09-30T06:29:59Zdoi:10.1016/0370-2693(95)01519-1http://cds.cern.ch/record/279431engBento, M.C.Bertolami, O.Cosmological solutions of higher-curvature string effective theories with dilatonsGeneral Relativity and CosmologyWe study the effect of higher-curvature terms in the string low-energy effective actions on the cosmological solutions of the theory, up to corrections quartic in the curvatures, for the bosonic and heterotic strings as well as the type II superstring. We find that cosmological solutions exist for all string types but they always disappear when the dilaton field is included, a conclusion that can be avoided if string-loop effects are taken into account.gr-qc/9503057CERN-TH-95-63CERN-TH-95-063DFTT-19-95CERN-TH-95-63DFTT-95-19oai:cds.cern.ch:2794311995-03-29
spellingShingle General Relativity and Cosmology
Bento, M.C.
Bertolami, O.
Cosmological solutions of higher-curvature string effective theories with dilatons
title Cosmological solutions of higher-curvature string effective theories with dilatons
title_full Cosmological solutions of higher-curvature string effective theories with dilatons
title_fullStr Cosmological solutions of higher-curvature string effective theories with dilatons
title_full_unstemmed Cosmological solutions of higher-curvature string effective theories with dilatons
title_short Cosmological solutions of higher-curvature string effective theories with dilatons
title_sort cosmological solutions of higher-curvature string effective theories with dilatons
topic General Relativity and Cosmology
url https://dx.doi.org/10.1016/0370-2693(95)01519-1
http://cds.cern.ch/record/279431
work_keys_str_mv AT bentomc cosmologicalsolutionsofhighercurvaturestringeffectivetheorieswithdilatons
AT bertolamio cosmologicalsolutionsofhighercurvaturestringeffectivetheorieswithdilatons

Ejemplares similares