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Phys. Rev. D 76, 101701(R) (2007) [5 pages]Calculation of the shear viscosity in SU(3) gluodynamics
Received 19 April 2007; published 5 November 2007
We perform a lattice Monte Carlo calculation of the two-point functions of the energy-momentum tensor at finite temperature in the SU(3) gauge theory. Unprecedented precision is obtained thanks to a multilevel algorithm. The lattice operators are renormalized nonperturbatively and the classical discretization errors affecting the correlators are corrected for. A conservative upper bound for the shear viscosity to entropy density ratio is derived, eta/s<1.0, and our best estimate is eta/s=0.134(33) at T=1.65Tc under the assumption of smoothness of the spectral function in the low-frequency region. ©2007 The American Physical Society REFERENCES (20)
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