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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...
Autores principales: | , , , , |
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Lenguaje: | eng |
Publicado: |
2018
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.122.122302 http://cds.cern.ch/record/2319376 |
_version_ | 1780958413414465536 |
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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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