Study of shear viscosity of SU(2)-gluodynamics within lattice simulation

被引：0
|
作者：
N.Yu. Astrakhantsev
V.V. Braguta
A.Yu. Kotov
机构：
[1] Institute for Theoretical and Experimental Physics,
[2] Moscow Institute of Physics and Technology,undefined
[3] Institute for High Energy Physics NRC “Kurchatov Institute”,undefined
[4] Far Eastern Federal University,undefined
[5] School of Biomedicine,undefined
[6] National Research Nuclear University MEPhI (Moscow Engineering Physics Institute),undefined
来源：
Journal of High Energy Physics | / 2015卷
关键词：
Quark-Gluon Plasma; Lattice Gauge Field Theories;
D O I：
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摘要：
This paper is devoted to the study of two-point correlation function of the energy-momentum tensor 〈T12T12〉 for SU(2)-gluodynamics within lattice simulation of QCD. Using multilevel algorithm we carried out the measurement of the correlation function at the temperature T /Tc ≃ 1.2. It is shown that lattice data can be described by spec-tral functions which interpolate between hydrodynamics at low frequencies and asymptotic freedom at high frequencies. The results of the study of spectral functions allowed us to estimate the ratio of shear viscosity to the entropy density η/s = 0.134 ± 0.057.
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