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arXiv · hep-lat/9901010

Improved Staggered Fermion Actions for QCD Thermodynamics

U. M. Heller·F. Karsch·B. Sturm
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Abstract

We analyze the cut-off dependence of the fermion contribution to the finite temperature free energy density in ${\cal O}(g^2)$ lattice perturbation theory for several improved staggered fermion actions. Cut-off effects are drastically reduced for the Naik action and an action with improved rotational symmetry of the quark propagator. We show that improvement of rotational symmetry at ${\cal O}(g^2)$ further reduces cut-off effects in thermodynamic observables. We also show that the introduction of fat-links does not have a significant influence on cut-off distortions at ${\cal O}(g^2)$.

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BibTeXRIS

U. M. Heller, F. Karsch, B. Sturm. 1999-01-12. Improved Staggered Fermion Actions for QCD Thermodynamics. https://doi.org/10.1103/physrevd.60.114502

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