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Title: Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Duke Univ., Durham, NC (United States); State Univ. of New York (SUNY), Albany, NY (United States); Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1503387
Alternate Identifier(s):
OSTI ID: 1609637
Grant/Contract Number:  
FG02-88ER40388; FG02-05ER41367; FG02-97ER41014
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 122 Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; physics; quark-gluon plasma; relativistic heavy-ion collisions

Citation Formats

Kurkela, Aleksi, Mazeliauskas, Aleksas, Paquet, Jean-François, Schlichting, Sören, and Teaney, Derek. Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory. United States: N. p., 2019. Web. https://doi.org/10.1103/PhysRevLett.122.122302.
Kurkela, Aleksi, Mazeliauskas, Aleksas, Paquet, Jean-François, Schlichting, Sören, & Teaney, Derek. Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory. United States. https://doi.org/10.1103/PhysRevLett.122.122302
Kurkela, Aleksi, Mazeliauskas, Aleksas, Paquet, Jean-François, Schlichting, Sören, and Teaney, Derek. Wed . "Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory". United States. https://doi.org/10.1103/PhysRevLett.122.122302.
@article{osti_1503387,
title = {Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory},
author = {Kurkela, Aleksi and Mazeliauskas, Aleksas and Paquet, Jean-François and Schlichting, Sören and Teaney, Derek},
abstractNote = {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.},
doi = {10.1103/PhysRevLett.122.122302},
journal = {Physical Review Letters},
number = 12,
volume = 122,
place = {United States},
year = {2019},
month = {3}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.122.122302

Citation Metrics:
Cited by: 11 works
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