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Title: Second-Order Hydrodynamics in Next-to-Leading-Order QCD

Abstract

We compute the hydrodynamic relaxation times τ π and τ j for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible; the computed values lie somewhat above these bounds. Strongly coupled theories with holographic duals strongly violate these bounds, highlighting their distance from a quasiparticle description.

Authors:
 [1];  [2];  [3]
  1. European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.
  2. Technische Univ. Darmstadt (Germany). Inst. fur Kernphysik
  3. Stony Brook Univ., NY (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
State Univ. of New York (SUNY), Plattsburgh, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1462306
Alternate Identifier(s):
OSTI ID: 1502072
Grant/Contract Number:  
FG02-88ER40388
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 5; 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

Citation Formats

Ghiglieri, Jacopo, Moore, Guy D., and Teaney, Derek. Second-Order Hydrodynamics in Next-to-Leading-Order QCD. United States: N. p., 2018. Web. doi:10.1103/physrevlett.121.052302.
Ghiglieri, Jacopo, Moore, Guy D., & Teaney, Derek. Second-Order Hydrodynamics in Next-to-Leading-Order QCD. United States. doi:10.1103/physrevlett.121.052302.
Ghiglieri, Jacopo, Moore, Guy D., and Teaney, Derek. Tue . "Second-Order Hydrodynamics in Next-to-Leading-Order QCD". United States. doi:10.1103/physrevlett.121.052302.
@article{osti_1462306,
title = {Second-Order Hydrodynamics in Next-to-Leading-Order QCD},
author = {Ghiglieri, Jacopo and Moore, Guy D. and Teaney, Derek},
abstractNote = {We compute the hydrodynamic relaxation times τπ and τj for hot QCD at next-to-leading order in the coupling with kinetic theory. We show that certain dimensionless ratios of second-order to first-order transport coefficients obey bounds which apply whenever a kinetic theory description is possible; the computed values lie somewhat above these bounds. Strongly coupled theories with holographic duals strongly violate these bounds, highlighting their distance from a quasiparticle description.},
doi = {10.1103/physrevlett.121.052302},
journal = {Physical Review Letters},
number = 5,
volume = 121,
place = {United States},
year = {2018},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/physrevlett.121.052302

Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables:

FIG. 1. FIG. 1. : η/s of QCD as a function of the temperature at LO and NLO for the different choices of the running coupling detailed in Fig. 3 and in the text later on. Figure taken from Ref. [14].

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    Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.