Temperature dependence of shear viscosity of SU(3)–gluodynamics within lattice simulation
1 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
Published online: 22 March 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 ∈ (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
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.