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Title: Color instabilities in the quark–gluon plasma

Abstract

When the quark–gluon plasma (QGP) – a system of deconfined quarks and gluons – is in a nonequilibrium state, it is usually unstable with respect to color collective modes. The instabilities, which are expected to strongly influence dynamics of the QGP produced in relativistic heavy-ion collisions, are extensively discussed under the assumption that the plasma is weakly coupled. Here, we begin by presenting the theoretical approaches to study the QGP, which include: field theory methods based on the Keldysh–Schwinger formalism, classical and quantum kinetic theories, and fluid techniques. The dispersion equations, which give the spectrum of plasma collective excitations, are analyzed in detail. We pay particular attention to a momentum distribution of plasma constituents which is obtained by deforming an isotropic momentum distribution. Mechanisms of chromoelectric and chromomagnetic instabilities are explained in terms of elementary physics. The Nyquist analysis, which allows one to determine the number of solutions of a dispersion equation without explicitly solving it, and stability criteria are also discussed. We then review various numerical approaches – purely classical or quantum – to simulate the temporal evolution of an unstable quark–gluon plasma. The dynamical role of instabilities in the processes of plasma equilibration is analyzed.

Authors:
 [1];  [2];  [3]
  1. Jan Kochanowski Univ., Kielce (Poland). Inst. of Physics; National Centre for Nuclear Research, Warsaw (Poland)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Dept.
  3. Goethe Univ., Frankfurt (Germany). Franfurt Inst. for Advanced Studies
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1392244
Alternate Identifier(s):
OSTI ID: 1397939
Report Number(s):
BNL-114267-2017-JA
Journal ID: ISSN 0370-1573
Grant/Contract Number:  
SC0012704; SC0013470
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physics Reports
Additional Journal Information:
Journal Volume: 682; Journal Issue: C; Journal ID: ISSN 0370-1573
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Mrówczyński, Stanisław, Schenke, Björn, and Strickland, Michael. Color instabilities in the quark–gluon plasma. United States: N. p., 2017. Web. doi:10.1016/j.physrep.2017.03.003.
Mrówczyński, Stanisław, Schenke, Björn, & Strickland, Michael. Color instabilities in the quark–gluon plasma. United States. doi:10.1016/j.physrep.2017.03.003.
Mrówczyński, Stanisław, Schenke, Björn, and Strickland, Michael. Sun . "Color instabilities in the quark–gluon plasma". United States. doi:10.1016/j.physrep.2017.03.003. https://www.osti.gov/servlets/purl/1392244.
@article{osti_1392244,
title = {Color instabilities in the quark–gluon plasma},
author = {Mrówczyński, Stanisław and Schenke, Björn and Strickland, Michael},
abstractNote = {When the quark–gluon plasma (QGP) – a system of deconfined quarks and gluons – is in a nonequilibrium state, it is usually unstable with respect to color collective modes. The instabilities, which are expected to strongly influence dynamics of the QGP produced in relativistic heavy-ion collisions, are extensively discussed under the assumption that the plasma is weakly coupled. Here, we begin by presenting the theoretical approaches to study the QGP, which include: field theory methods based on the Keldysh–Schwinger formalism, classical and quantum kinetic theories, and fluid techniques. The dispersion equations, which give the spectrum of plasma collective excitations, are analyzed in detail. We pay particular attention to a momentum distribution of plasma constituents which is obtained by deforming an isotropic momentum distribution. Mechanisms of chromoelectric and chromomagnetic instabilities are explained in terms of elementary physics. The Nyquist analysis, which allows one to determine the number of solutions of a dispersion equation without explicitly solving it, and stability criteria are also discussed. We then review various numerical approaches – purely classical or quantum – to simulate the temporal evolution of an unstable quark–gluon plasma. The dynamical role of instabilities in the processes of plasma equilibration is analyzed.},
doi = {10.1016/j.physrep.2017.03.003},
journal = {Physics Reports},
number = C,
volume = 682,
place = {United States},
year = {Sun Apr 09 00:00:00 EDT 2017},
month = {Sun Apr 09 00:00:00 EDT 2017}
}

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Cited by: 8 works
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