Bulk viscosity in a cold CFL superfluid

We compute one of the bulk viscosity coeffcients of cold color -flavor locked ( CFL) quark matter in the temperature regime where the contribution of mesons, quarks and gluons to transport phenomena is Boltzmann suppressed. In that regime dissipation occurs due to collisions of super fluid phonons,...

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Detalles Bibliográficos
Autores: Llanes Estrada, Felipe José, Manuel, Cristina
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/50804
Acceso en línea:https://hdl.handle.net/20.500.14352/50804
Access Level:acceso abierto
Palabra clave:53
Strange Quark Matter
Stars
Density
Qcd
Hydrodynamics
Dynamics
Systems
Pulsars
Modes
Física (Física)
22 Física
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oai_identifier_str oai:docta.ucm.es:20.500.14352/50804
network_acronym_str ES
network_name_str España
repository_id_str
spelling Bulk viscosity in a cold CFL superfluidLlanes Estrada, Felipe JoséManuel, Cristina53Strange Quark MatterStarsDensityQcdHydrodynamicsDynamicsSystemsPulsarsModesFísica (Física)22 FísicaWe compute one of the bulk viscosity coeffcients of cold color -flavor locked ( CFL) quark matter in the temperature regime where the contribution of mesons, quarks and gluons to transport phenomena is Boltzmann suppressed. In that regime dissipation occurs due to collisions of super fluid phonons, the Goldstone modes associated to the spontaneous breaking of baryon symmetry. We first review the hydrodynamics of relativistic superfluids, and recall that there are at least three bulk viscosity coeffcients in these systems. We then compute the bulk viscosity coeffcient associated to the normal fluid component of the superfluid. In our analysis we use Son's effective field theory for the superfluid phonon, amended to include scale breaking effects proportional to the square of the strange quark mass m(s). We compute the bulk viscosity at leading order in the scale breaking parameter, and find that it is dominated by collinear splitting and joining processes. The resulting transport coeffcient is zeta = 0.011 m(s)(4)/T, growing at low temperature T until the phonon fluid description stops making sense. Our results are relevant for studying the rotational properties of a compact star formed by CFL quark matter.IOP Publishing LtdUniversidad Complutense de Madrid20072007-08-0120072007-08-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/50804reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/508042026-06-02T12:44:21Z
dc.title.none.fl_str_mv Bulk viscosity in a cold CFL superfluid
title Bulk viscosity in a cold CFL superfluid
spellingShingle Bulk viscosity in a cold CFL superfluid
Llanes Estrada, Felipe José
53
Strange Quark Matter
Stars
Density
Qcd
Hydrodynamics
Dynamics
Systems
Pulsars
Modes
Física (Física)
22 Física
title_short Bulk viscosity in a cold CFL superfluid
title_full Bulk viscosity in a cold CFL superfluid
title_fullStr Bulk viscosity in a cold CFL superfluid
title_full_unstemmed Bulk viscosity in a cold CFL superfluid
title_sort Bulk viscosity in a cold CFL superfluid
dc.creator.none.fl_str_mv Llanes Estrada, Felipe José
Manuel, Cristina
author Llanes Estrada, Felipe José
author_facet Llanes Estrada, Felipe José
Manuel, Cristina
author_role author
author2 Manuel, Cristina
author2_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 53
Strange Quark Matter
Stars
Density
Qcd
Hydrodynamics
Dynamics
Systems
Pulsars
Modes
Física (Física)
22 Física
topic 53
Strange Quark Matter
Stars
Density
Qcd
Hydrodynamics
Dynamics
Systems
Pulsars
Modes
Física (Física)
22 Física
description We compute one of the bulk viscosity coeffcients of cold color -flavor locked ( CFL) quark matter in the temperature regime where the contribution of mesons, quarks and gluons to transport phenomena is Boltzmann suppressed. In that regime dissipation occurs due to collisions of super fluid phonons, the Goldstone modes associated to the spontaneous breaking of baryon symmetry. We first review the hydrodynamics of relativistic superfluids, and recall that there are at least three bulk viscosity coeffcients in these systems. We then compute the bulk viscosity coeffcient associated to the normal fluid component of the superfluid. In our analysis we use Son's effective field theory for the superfluid phonon, amended to include scale breaking effects proportional to the square of the strange quark mass m(s). We compute the bulk viscosity at leading order in the scale breaking parameter, and find that it is dominated by collinear splitting and joining processes. The resulting transport coeffcient is zeta = 0.011 m(s)(4)/T, growing at low temperature T until the phonon fluid description stops making sense. Our results are relevant for studying the rotational properties of a compact star formed by CFL quark matter.
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-08-01
2007
2007-08-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/50804
url https://hdl.handle.net/20.500.14352/50804
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IOP Publishing Ltd
publisher.none.fl_str_mv IOP Publishing Ltd
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415787854299136
score 15,300719

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