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Title: Nonequilibrium Attractor in High-Temperature QCD Plasmas

Abstract

We establish the existence of a far-from-equilibrium attractor in weakly coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the energy-momentum tensor to the detailed form of the one-particle distribution function. Based on our results, we assess different procedures for reconstructing the full one-particle distribution function from the energy-momentum tensor along the attractor and discuss implications for the freeze-out procedure used in the phenomenological analysis of ultrarelativistic nuclear collisions.

Authors:
; ; ORCiD logo
Publication Date:
Research Org.:
Kent State Univ., Kent, OH (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1664482
Alternate Identifier(s):
OSTI ID: 1712434
Grant/Contract Number:  
SC0013470; PGS0251
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 125 Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Quantum chromodynamics; quark-gluon plasma; relativistic heavy-ion collisions; Boltzmann theory

Citation Formats

Almaalol, Dekrayat, Kurkela, Aleksi, and Strickland, Michael. Nonequilibrium Attractor in High-Temperature QCD Plasmas. United States: N. p., 2020. Web. https://doi.org/10.1103/PhysRevLett.125.122302.
Almaalol, Dekrayat, Kurkela, Aleksi, & Strickland, Michael. Nonequilibrium Attractor in High-Temperature QCD Plasmas. United States. https://doi.org/10.1103/PhysRevLett.125.122302
Almaalol, Dekrayat, Kurkela, Aleksi, and Strickland, Michael. Thu . "Nonequilibrium Attractor in High-Temperature QCD Plasmas". United States. https://doi.org/10.1103/PhysRevLett.125.122302.
@article{osti_1664482,
title = {Nonequilibrium Attractor in High-Temperature QCD Plasmas},
author = {Almaalol, Dekrayat and Kurkela, Aleksi and Strickland, Michael},
abstractNote = {We establish the existence of a far-from-equilibrium attractor in weakly coupled gauge theory undergoing one-dimensional Bjorken expansion. We demonstrate that the resulting far-from-equilibrium evolution is insensitive to certain features of the initial condition, including both the initial momentum-space anisotropy and initial occupancy. We find that this insensitivity extends beyond the energy-momentum tensor to the detailed form of the one-particle distribution function. Based on our results, we assess different procedures for reconstructing the full one-particle distribution function from the energy-momentum tensor along the attractor and discuss implications for the freeze-out procedure used in the phenomenological analysis of ultrarelativistic nuclear collisions.},
doi = {10.1103/PhysRevLett.125.122302},
journal = {Physical Review Letters},
number = 12,
volume = 125,
place = {United States},
year = {2020},
month = {9}
}

Journal Article:
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Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.125.122302

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