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arXiv · hep-lat/9703003

QCD Thermodynamics with an Improved Lattice Action

Claude Bernard·James E. Hetrick·Thomas DeGrand·Matthew Wingate·Carleton DeTar·Steven Gottlieb·Urs M. Heller·Kari Rummukainen·Doug Toussaint·Robert L. Sugar·:·MILC Collaboration
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Abstract

We have investigated QCD with two flavors of degenerate fermions using a Symanzik-improved lattice action for both the gauge and fermion actions. Our study focuses on the deconfinement transition on an $N_t=4$ lattice. Having located the thermal transition, we performed zero temperature simulations nearby in order to compute hadronic masses and the static quark potential. We find that the present action reduces lattice artifacts present in thermodynamics with the standard Wilson (gauge and fermion) actions. However, it does not bring studies with Wilson-type quarks to the same level as those using the Kogut--Susskind formulation.

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Claude Bernard, James E. Hetrick, Thomas DeGrand, Matthew Wingate, Carleton DeTar, Steven Gottlieb, Urs M. Heller, Kari Rummukainen, Doug Toussaint, Robert L. Sugar, :, MILC Collaboration. 1997-03-06. QCD Thermodynamics with an Improved Lattice Action. https://doi.org/10.1103/physrevd.56.5584

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