Dynamical simulations of QCD at finite temperature with a truncated perfect action

Details Dynamical simulations of QCD at finite temperature with a truncated perfect action Dynamical simulations of QCD at finite temperature with a truncated perfect action

2006-09-19

arxiv.org/abs/hep-lat/0609029v1

PoSLAT2006:146,2006

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 8 figures, talk presented at Lattice 2006 (High temperature and density)

Scientific paper

The Hypercube operator determines a variant of the approximate, truncated perfect fermion action. In this pilot study we are going to report on first experiences in dynamical QCD simulations with the Hypercube fermions. We apply this formulation in an investigation of the finite temperature transition for two flavours. On lattices of size $8^3\times 4$ we explore the phase diagram. Physical scales are estimated from pseudoscalar and vector meson masses obtained on $8^3\times 16$ lattices. We observe the presence of a metastability region but do not find evidence for an Aoki phase. The Hypercube operator allows us to simulate at ratios of pseudoscalar to vector meson masses at least as small as 0.8 at the thermal crossover at $N_t=4$, which renders this formulation cheaper than the Wilson like fermions.

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