Abstract
This paper is devoted to the study of two-point correlation function of the energy-momentum tensor 〈T 12 T 12〉 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 /T c ≃ 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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ArXiv ePrint: 1507.06225
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Astrakhantsev, N., Braguta, V. & Kotov, A. Study of shear viscosity of SU(2)-gluodynamics within lattice simulation. J. High Energ. Phys. 2015, 82 (2015). https://doi.org/10.1007/JHEP09(2015)082
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DOI: https://doi.org/10.1007/JHEP09(2015)082