Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time

Starting from the Kubo formula we calculate the shear viscosity in hot phi**4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple...

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Detalles Bibliográficos
Autores principales: Wang, Enke, Heinz, Ulrich W.
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(99)01324-6
http://cds.cern.ch/record/404045
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author Wang, Enke
Heinz, Ulrich W.
author_facet Wang, Enke
Heinz, Ulrich W.
author_sort Wang, Enke
collection CERN
description Starting from the Kubo formula we calculate the shear viscosity in hot phi**4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple the Bethe-Salpeter equations for the different real-time components of the 4-point function. The resulting scalar integral equation is identical with the one obtained by Jeon using diagrammatic ``cutting rules'' in the Imaginary Time Formalism.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
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spelling cern-4040452023-03-14T19:57:39Zdoi:10.1016/S0370-2693(99)01324-6http://cds.cern.ch/record/404045engWang, EnkeHeinz, Ulrich W.Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real timeParticle Physics - PhenomenologyStarting from the Kubo formula we calculate the shear viscosity in hot phi**4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple the Bethe-Salpeter equations for the different real-time components of the 4-point function. The resulting scalar integral equation is identical with the one obtained by Jeon using diagrammatic ``cutting rules'' in the Imaginary Time Formalism.Starting from the Kubo formula we calculate the shear viscosity in hot phi**4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple the Bethe-Salpeter equations for the different real-time components of the 4-point function. The resulting scalar integral equation is identical with the one obtained by Jeon using diagrammatic ``cutting rules'' in the Imaginary Time Formalism.Starting from the Kubo formula we calculate the shear viscosity in hot phi**4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple the Bethe-Salpeter equations for the different real-time components of the 4-point function. The resulting scalar integral equation is identical with the one obtained by Jeon using diagrammatic ``cutting rules'' in the Imaginary Time Formalism.Starting from the Kubo formula we calculate the shear viscosity in hot phi**4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple the Bethe-Salpeter equations for the different real-time components of the 4-point function. The resulting scalar integral equation is identical with the one obtained by Jeon using diagrammatic ``cutting rules'' in the Imaginary Time Formalism.Starting from the Kubo formula we calculate the shear viscosity in hot φ 4 theory nonperturbatively by resumming ladders with a real-time version of the Bethe-Salpeter equation at finite temperature. In the weak coupling limit, the generalized Fluctuation-Dissipation Theorem is shown to decouple the Bethe-Salpeter equations for the different real-time components of the 4-point function. The resulting scalar integral equation is identical with the one obtained by Jeon using diagrammatic “cutting rules” in the Imaginary Time Formalism.hep-ph/9910367CERN-TH-99-316oai:cds.cern.ch:4040451999-10-19
spellingShingle Particle Physics - Phenomenology
Wang, Enke
Heinz, Ulrich W.
Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
title Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
title_full Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
title_fullStr Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
title_full_unstemmed Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
title_short Nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
title_sort nonperturbative calculation of the shear viscosity in hot $\phi^{4}$ theory in real time
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(99)01324-6
http://cds.cern.ch/record/404045
work_keys_str_mv AT wangenke nonperturbativecalculationoftheshearviscosityinhotphi4theoryinrealtime
AT heinzulrichw nonperturbativecalculationoftheshearviscosityinhotphi4theoryinrealtime

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