Temperature dependence of shear viscosity of SU(3)-gluodynamics within lattice simulation
Institute for Theoretical and Experimental Physics, Moscow, 117218 Russia
2 Moscow Institute of Physics and Technology, Dolgoprudny, 141700 Russia
3 Institute for High Energy Physics NRC “Kurchatov Institute”, Protvino, 142281 Russian Federation
4 Far Eastern Federal University, School of Biomedicine, 690950 Vladivostok, Russia
5 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), 115409, Russia, Moscow, Kashirskoe highway, 31
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Published online: 5 December 2017
This report is devoted to the study of temperature dependence of shear viscosity in SU(3)-gluodynamics. To calculate shear viscosity we measured the correlation function of the energy-momentum tensor T12T12 for a set of temperatures in the region T/Tc ϵ (0.9, 1.5). The measurements were carried out using multilevel algorithm which considerably improves the accuracy of the data. For determination of the shear viscosity two methods were used: physically motivated ansatz and non-parametrical Backus-Gilbert method. Both methods give consistent results. The calculation allows to determine temperature dependence of the ratio of shear viscosity to the entropy density η/s.
© The Authors, published by EDP Sciences, 2017
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