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Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory

High-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in classical field simulations to the subsequent hydrodynamic evolution. We build...

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Detalles Bibliográficos
Autores principales: Kurkela, Aleksi, Mazeliauskas, Aleksas, Paquet, Jean-François, Schlichting, Sören, Teaney, Derek
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.122.122302
http://cds.cern.ch/record/2319376
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author Kurkela, Aleksi
Mazeliauskas, Aleksas
Paquet, Jean-François
Schlichting, Sören
Teaney, Derek
author_facet Kurkela, Aleksi
Mazeliauskas, Aleksas
Paquet, Jean-François
Schlichting, Sören
Teaney, Derek
author_sort Kurkela, Aleksi
collection CERN
description High-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in classical field simulations to the subsequent hydrodynamic evolution. We build such a framework using nonequilibrium Green’s functions, calculated in QCD kinetic theory, to propagate the initial energy-momentum tensor to the hydrodynamic phase. We demonstrate that this approach can be easily incorporated into existing hydrodynamic simulations, leading to stronger constraints on the energy density at early times and the transport properties of the QCD medium. Based on (conformal) scaling properties of the Green’s functions, we further obtain pragmatic bounds for the applicability of hydrodynamics in nuclear collisions.
id cern-2319376
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2018
record_format invenio
spelling cern-23193762021-02-27T04:01:26Zdoi:10.1103/PhysRevLett.122.122302http://cds.cern.ch/record/2319376engKurkela, AleksiMazeliauskas, AleksasPaquet, Jean-FrançoisSchlichting, SörenTeaney, DerekMatching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theorynucl-thNuclear Physics - Theoryhep-phParticle Physics - PhenomenologyHigh-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in classical field simulations to the subsequent hydrodynamic evolution. We build such a framework using nonequilibrium Green’s functions, calculated in QCD kinetic theory, to propagate the initial energy-momentum tensor to the hydrodynamic phase. We demonstrate that this approach can be easily incorporated into existing hydrodynamic simulations, leading to stronger constraints on the energy density at early times and the transport properties of the QCD medium. Based on (conformal) scaling properties of the Green’s functions, we further obtain pragmatic bounds for the applicability of hydrodynamics in nuclear collisions.High-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in classical field simulations to the subsequent hydrodynamic evolution. We build such a framework using nonequilibrium Green's functions, calculated in QCD kinetic theory, to propagate the initial energy-momentum tensor to the hydrodynamic phase. We demonstrate that this approach can be easily incorporated into existing hydrodynamic simulations, leading to stronger constraints on the energy density at early times and the transport properties of the QCD medium. Based on (conformal) scaling properties of the Green's functions, we further obtain pragmatic bounds for the applicability of hydrodynamics in nuclear collisions.arXiv:1805.01604oai:cds.cern.ch:23193762018-05-04
spellingShingle nucl-th
Nuclear Physics - Theory
hep-ph
Particle Physics - Phenomenology
Kurkela, Aleksi
Mazeliauskas, Aleksas
Paquet, Jean-François
Schlichting, Sören
Teaney, Derek
Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory
title Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory
title_full Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory
title_fullStr Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory
title_full_unstemmed Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory
title_short Matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with QCD kinetic theory
title_sort matching the non-equilibrium initial stage of heavy ion collisions to hydrodynamics with qcd kinetic theory
topic nucl-th
Nuclear Physics - Theory
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevLett.122.122302
http://cds.cern.ch/record/2319376
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