Thermodynamics of SU(3) gauge theory at fixed lattice spacing

Details Thermodynamics of SU(3) gauge theory at fixed lattice spacing Thermodynamics of SU(3) gauge theory at fixed lattice spacing

2008-10-09

arxiv.org/abs/0810.1570v1

PoS LATTICE2008:174,2008

Physics

High Energy Physics

High Energy Physics - Lattice

7pages, 3figures, proceedings of Lattice 2008, Williamsburg, Virginia, USA, July 14-19, 2008

Scientific paper

We study thermodynamics of SU(3) gauge theory at fixed scales on the lattice, where we vary temperature by changing the temporal lattice size N_t=(Ta_t)^{-1}. In the fixed scale approach, finite temperature simulations are performed on common lattice spacings and spatial volumes. Consequently, we can isolate thermal effects in observables from other uncertainties, such as lattice artifact, renormalization factor, and spatial volume effect. Furthermore, in the EOS calculations, the fixed scale approach is able to reduce computational costs for zero temperature subtraction and parameter search to find lines of constant physics, which are demanding in full QCD simulations. As a test of the approach, we study the thermodynamics of the SU(3) gauge theory on isotropic and anisotropic lattices. In addition to the equation of state, we calculate the critical temperature and the static quark free energy at a fixed scale.

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