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

doi:10.1103/PhysRevD.56.5584

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

Physics

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39 Scopus citations

Abstract

We have investigated QCD with two flavors of degenerate fermions using the Symanzik-improvement program for both the gauge and fermion actions. Our study focuses on the deconfinement transition on an [Formula presented] 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 this action reduces lattice artifacts present in thermodynamics with the standard Wilson (gauge and fermion) actions. However, comparisons between improved Wilson and Kogut-Susskind actions show some disagreement.

Original language	English (US)
Pages (from-to)	5584-5595
Number of pages	12
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	56
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevD.56.5584
State	Published - 1997

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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10.1103/PhysRevD.56.5584

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QCD thermodynamics with an improved lattice action. / Bernard, Claude; Hetrick, James E.; DeGrand, Thomas; Wingate, Matthew; DeTar, Carleton; Gottlieb, Steven; Heller, Urs M.; Rummukainen, Kari; Toussaint, Doug; Sugar, Robert L.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 56, No. 9, 1997, p. 5584-5595.

Research output: Contribution to journal › Article › peer-review

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AU - DeGrand, Thomas

AU - Wingate, Matthew

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AU - Heller, Urs M.

AU - Rummukainen, Kari

AU - Toussaint, Doug

AU - Sugar, Robert L.

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AB - We have investigated QCD with two flavors of degenerate fermions using the Symanzik-improvement program for both the gauge and fermion actions. Our study focuses on the deconfinement transition on an [Formula presented] 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 this action reduces lattice artifacts present in thermodynamics with the standard Wilson (gauge and fermion) actions. However, comparisons between improved Wilson and Kogut-Susskind actions show some disagreement.

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QCD thermodynamics with an improved lattice action

Abstract

ASJC Scopus subject areas

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