Thermodynamics with 2+1 and 3 flavors of improved staggered quarks

C. Bernard; T. Burch; S. Datta; T. A. DeGrand; C. E. DeTar; S. Gottlieb; U. M. Heller; K. Orginos; R. L. Sugar; D. Toussaint

doi:10.1016/S0375-9474(02)00697-8

Thermodynamics with 2+1 and 3 flavors of improved staggered quarks

C. Bernard, T. Burch, S. Datta, T. A. DeGrand, C. E. DeTar, S. Gottlieb, U. M. Heller, K. Orginos, R. L. Sugar, D. Toussaint

Physics

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7 Scopus citations

Abstract

We present preliminary results from exploring the phase diagram of finite temperature QCD with three degenerate flavors and with two light flavors and the mass of the third held approximately at the strange quark mass. We use an order α_s²α², α⁴ Symanzik improved gauge action and an order α_sα², α⁴ improved staggered quark action. The improved staggered action leads to a dispersion relation with diminished lattice artifacts, and hence better thermodynamic properties. It decreases the flavor symmetry breaking of staggered quarks substantially, and we estimate that at the transition temperature for an N_t = 8 to N_t = 10 lattice all pions will be lighter than the lightest kaon. Preliminary results on lattices with N_t = 4, 6 and 8 are presented.

Original language	English (US)
Pages (from-to)	140-145
Number of pages	6
Journal	Nuclear Physics A
Volume	702
Issue number	1-4
DOIs	https://doi.org/10.1016/S0375-9474(02)00697-8
State	Published - May 6 2002

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Cite this

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title = "Thermodynamics with 2+1 and 3 flavors of improved staggered quarks",

abstract = "We present preliminary results from exploring the phase diagram of finite temperature QCD with three degenerate flavors and with two light flavors and the mass of the third held approximately at the strange quark mass. We use an order αs2α2, α4 Symanzik improved gauge action and an order αsα2, α4 improved staggered quark action. The improved staggered action leads to a dispersion relation with diminished lattice artifacts, and hence better thermodynamic properties. It decreases the flavor symmetry breaking of staggered quarks substantially, and we estimate that at the transition temperature for an Nt = 8 to Nt = 10 lattice all pions will be lighter than the lightest kaon. Preliminary results on lattices with Nt = 4, 6 and 8 are presented.",

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T1 - Thermodynamics with 2+1 and 3 flavors of improved staggered quarks

AU - Bernard, C.

AU - Burch, T.

AU - Datta, S.

AU - DeGrand, T. A.

AU - DeTar, C. E.

AU - Gottlieb, S.

AU - Heller, U. M.

AU - Orginos, K.

AU - Sugar, R. L.

AU - Toussaint, D.

PY - 2002/5/6

Y1 - 2002/5/6

N2 - We present preliminary results from exploring the phase diagram of finite temperature QCD with three degenerate flavors and with two light flavors and the mass of the third held approximately at the strange quark mass. We use an order αs2α2, α4 Symanzik improved gauge action and an order αsα2, α4 improved staggered quark action. The improved staggered action leads to a dispersion relation with diminished lattice artifacts, and hence better thermodynamic properties. It decreases the flavor symmetry breaking of staggered quarks substantially, and we estimate that at the transition temperature for an Nt = 8 to Nt = 10 lattice all pions will be lighter than the lightest kaon. Preliminary results on lattices with Nt = 4, 6 and 8 are presented.

AB - We present preliminary results from exploring the phase diagram of finite temperature QCD with three degenerate flavors and with two light flavors and the mass of the third held approximately at the strange quark mass. We use an order αs2α2, α4 Symanzik improved gauge action and an order αsα2, α4 improved staggered quark action. The improved staggered action leads to a dispersion relation with diminished lattice artifacts, and hence better thermodynamic properties. It decreases the flavor symmetry breaking of staggered quarks substantially, and we estimate that at the transition temperature for an Nt = 8 to Nt = 10 lattice all pions will be lighter than the lightest kaon. Preliminary results on lattices with Nt = 4, 6 and 8 are presented.

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JO - Nuclear Physics A

JF - Nuclear Physics A

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Thermodynamics with 2+1 and 3 flavors of improved staggered quarks

Abstract

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