Contributions of stochastic background fields to the shear and bulk viscosities of the gluon plasma

Details Contributions of stochastic background fields to the shear and bulk viscosities of the gluon plasma Contributions of stochastic background fields to the shear and bulk viscosities of the gluon plasma

2010-02-11

arxiv.org/abs/1002.2406v1

Annals Phys.325:1304-1315,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 2 figures

Scientific paper

10.1016/j.aop.2010.02.003

The contributions of confining as well as nonconfining nonperturbative self-interactions of stochastic background fields to the shear and bulk viscosities of the gluon plasma in SU(3) Yang-Mills theory are calculated. The nonconfining self-interactions change (specifically, diminish) the values of the shear and bulk viscosities by 15%, that is close to the 17% which the strength of the nonconfining self-interactions amounts of the full strength of nonperturbative self-interactions. The ratios to the entropy density of the obtained nonperturbative contributions to the shear and bulk viscosities are compared with the results of perturbation theory and the predictions of {\cal N}=4 SYM.

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