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Thermodynamics of SU(3) Gauge Theory from Gradient Flow (1312.7492v3)
Published 29 Dec 2013 in hep-lat, hep-ph, hep-th, and nucl-th
Abstract: A novel method to study the bulk thermodynamics in lattice gauge theory is proposed on the basis of the Yang-Mills gradient flow with a fictitious time t. The energy density (epsilon) and the pressure (P) of SU(3) gauge theory at fixed temperature are calculated directly on 323 x (6,8,10) lattices from the thermal average of the well-defined energy-momentum tensor (T_{mu nu}R(x)) obtained by the gradient flow. It is demonstrated that the continuum limit can be taken in a controlled manner from the t-dependence of the flowed data.