Second-order Hydrodynamics in Next-to-Leading-Order QCD

We compute the hydrodynamic relaxation times τπ and τj for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible;...

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Detalles Bibliográficos
Autores principales: Ghiglieri, Jacopo, Moore, Guy D., Teaney, Derek
Lenguaje:eng
Publicado: 2018
Materias:
nucl-th
Nuclear Physics - Theory
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.121.052302
http://cds.cern.ch/record/2317052
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author Ghiglieri, Jacopo
Moore, Guy D.
Teaney, Derek
author_facet Ghiglieri, Jacopo
Moore, Guy D.
Teaney, Derek
author_sort Ghiglieri, Jacopo
collection CERN
description We compute the hydrodynamic relaxation times τπ and τj for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible; the computed values lie somewhat above these bounds. Strongly coupled theories with holographic duals strongly violate these bounds, highlighting their distance from a quasiparticle description.
id cern-2317052
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
record_format invenio
spelling cern-23170522023-03-12T04:14:01Zdoi:10.1103/PhysRevLett.121.052302http://cds.cern.ch/record/2317052engGhiglieri, JacopoMoore, Guy D.Teaney, DerekSecond-order Hydrodynamics in Next-to-Leading-Order QCDnucl-thNuclear Physics - Theoryhep-phParticle Physics - PhenomenologyWe compute the hydrodynamic relaxation times τπ and τj for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible; the computed values lie somewhat above these bounds. Strongly coupled theories with holographic duals strongly violate these bounds, highlighting their distance from a quasiparticle description.We compute the hydrodynamic relaxation times $\tau_\pi$ and $\tau_j$ for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible; the computed values lie somewhat above these bounds. Strongly coupled theories with holographic duals strongly violate these bounds, highlighting their distance from a quasiparticle description.arXiv:1805.02663CERN-TH-2018-079oai:cds.cern.ch:23170522018-05-07
spellingShingle nucl-th
Nuclear Physics - Theory
hep-ph
Particle Physics - Phenomenology
Ghiglieri, Jacopo
Moore, Guy D.
Teaney, Derek
Second-order Hydrodynamics in Next-to-Leading-Order QCD
title Second-order Hydrodynamics in Next-to-Leading-Order QCD
title_full Second-order Hydrodynamics in Next-to-Leading-Order QCD
title_fullStr Second-order Hydrodynamics in Next-to-Leading-Order QCD
title_full_unstemmed Second-order Hydrodynamics in Next-to-Leading-Order QCD
title_short Second-order Hydrodynamics in Next-to-Leading-Order QCD
title_sort second-order hydrodynamics in next-to-leading-order qcd
topic nucl-th
Nuclear Physics - Theory
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevLett.121.052302
http://cds.cern.ch/record/2317052
work_keys_str_mv AT ghiglierijacopo secondorderhydrodynamicsinnexttoleadingorderqcd
AT mooreguyd secondorderhydrodynamicsinnexttoleadingorderqcd
AT teaneyderek secondorderhydrodynamicsinnexttoleadingorderqcd

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