O(d,d)-covariant string cosmology

The recently discovered $O(d,d)$ symmetry of the space of slowly varying cosmological string vacua in $d+1$ dimensions is shown to be preserved in the presence of bulk string matter. The existence of $O(d,d)$ conserved currents allows all the equations of string cosmology to be reduced to first-orde...

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Detalles Bibliográficos
Autores principales: Gasperini, M., Veneziano, G.
Lenguaje:eng
Publicado: 1992
Materias:
General Theoretical Physics
Particle Physics - Theory
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(92)90744-O
http://cds.cern.ch/record/228089
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author Gasperini, M.
Veneziano, G.
author_facet Gasperini, M.
Veneziano, G.
author_sort Gasperini, M.
collection CERN
description The recently discovered $O(d,d)$ symmetry of the space of slowly varying cosmological string vacua in $d+1$ dimensions is shown to be preserved in the presence of bulk string matter. The existence of $O(d,d)$ conserved currents allows all the equations of string cosmology to be reduced to first-order differential equations. The perfect-fluid approximation is not $O(d,d)$-invariant, implying that stringy fluids possess in general a non-vanishing viscosity.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1992
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spelling cern-2280892022-03-31T02:37:14Zdoi:10.1016/0370-2693(92)90744-Ohttp://cds.cern.ch/record/228089engGasperini, M.Veneziano, G.O(d,d)-covariant string cosmologyGeneral Theoretical PhysicsParticle Physics - TheoryThe recently discovered $O(d,d)$ symmetry of the space of slowly varying cosmological string vacua in $d+1$ dimensions is shown to be preserved in the presence of bulk string matter. The existence of $O(d,d)$ conserved currents allows all the equations of string cosmology to be reduced to first-order differential equations. The perfect-fluid approximation is not $O(d,d)$-invariant, implying that stringy fluids possess in general a non-vanishing viscosity.The recently discovered $O(d,d)$ symmetry of the space of slowly varying cosmological string vacua in $d+1$ dimensions is shown to be preserved in the presence of bulk string matter. The existence of $O(d,d)$ conserved currents allows all the equations of string cosmology to be reduced to first-order differential equations. The perfect-fluid approximation is not $O(d,d)$-invariant, implying that stringy fluids possess in general a non-vanishing viscosity.The recently discovered $O(d,d)$ symmetry of the space of slowly varying cosmological string vacua in $d+1$ dimensions is shown to be preserved in the presence of bulk string matter. The existence of $O(d,d)$ conserved currents allows all the equations of string cosmology to be reduced to first-order differential equations. The perfect-fluid approximation is not $O(d,d)$-invariant, implying that stringy fluids possess in general a non-vanishing viscosity.The recently discovered O( d , d ) symmetry of the space of (slowly-varying) cosmological string vacua in d +1 dimensions is shown to be preserved in the presence of bulk string matter. The existence of O( d , d ) conserved currents allows all the equations of string cosmology to be reduced to first-order differential equations. The perfect-fluid approximation is not invariant under O( d , d ) transformations, implying that stringly fluids possess in general a non-vanishing viscosity.hep-th/9112044CERN-TH-6321-91DFTT-50-91CERN-TH-6321-91DFTT-91-50oai:cds.cern.ch:2280891992
spellingShingle General Theoretical Physics
Particle Physics - Theory
Gasperini, M.
Veneziano, G.
O(d,d)-covariant string cosmology
title O(d,d)-covariant string cosmology
title_full O(d,d)-covariant string cosmology
title_fullStr O(d,d)-covariant string cosmology
title_full_unstemmed O(d,d)-covariant string cosmology
title_short O(d,d)-covariant string cosmology
title_sort o(d,d)-covariant string cosmology
topic General Theoretical Physics
Particle Physics - Theory
url https://dx.doi.org/10.1016/0370-2693(92)90744-O
http://cds.cern.ch/record/228089
work_keys_str_mv AT gasperinim oddcovariantstringcosmology
AT venezianog oddcovariantstringcosmology

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