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arXiv · hep-lat/9612018

Thermodynamics of Four-Flavour QCD with Improved Staggered Fermions

J. Engels·R. Joswig·F. Karsch·E. Laermann·M. Lütgemeier·B. Petersson
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Abstract

We have calculated the pressure and energy density in four-flavour QCD using improved fermion and gauge actions. We observe a strong reduction of finite cut-off effects in the high temperature regime, similar to what has been noted before for the SU(3) gauge theory. Calculations have been performed on $16^3\times 4$ and 16^4 lattices for two values of the quark mass, $ma = 0.05$ and 0.1. A calculation of the string tension at zero temperature yields a critical temperature $T_c/\sqrtσ = 0.407 \pm 0.010$ for the smaller quark mass value.

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J. Engels, R. Joswig, F. Karsch, E. Laermann, M. Lütgemeier, B. Petersson. 1996-12-19. Thermodynamics of Four-Flavour QCD with Improved Staggered Fermions. https://doi.org/10.1016/s0370-2693(97)00114-7

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