Relaxation time ansatz and shear and bulk viscosities of gluon matter

被引:10
作者
Khvorostukhin, A. S. [1 ,2 ]
Toneev, V. D. [1 ]
Voskresensky, D. N. [3 ,4 ]
机构
[1] Joint Inst Nucl Res, Dubna 141980, Russia
[2] Moldova Acad Sci, Inst Appl Phys, MD-2028 Kishinev, Moldova
[3] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia
[4] Helmholtzzentrum Schwerionenforsch GmbH, GSI, DE-64291 Darmstadt, Germany
来源
PHYSICAL REVIEW C | 2011年 / 84卷 / 03期
关键词
TRANSPORT-COEFFICIENTS; PLASMA; MODEL;
D O I
10.1103/PhysRevC.84.035202
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
Shear and bulk viscosity-to-entropy density ratios are calculated for pure gluon matter in a nonequilibrium mean-field quasiparticle approach within the relaxation time approximation. We study how different approximations used in the literature affect the results for the shear and bulk viscosities. Though the results for the shear viscosity turned out to be quite robust, all evaluations of the shear and bulk viscosities obtained in the framework of the relaxation time approximation can be considered only as rough estimations.
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页数:9
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