Thermodynamics with 3 and 2+1 flavors improved staggered quarks

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

doi:10.1016/S0920-5632(01)01736-4

Thermodynamics with 3 and 2+1 flavors improved staggered quarks

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

Physics

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6 Scopus citations

Abstract

We present preliminary results [1] 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_s²a², a⁴ Symanzik improved gauge action and an order α_sa², a⁴ 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)	429-431
Number of pages	3
Journal	Nuclear Physics B - Proceedings Supplements
Volume	106-107
DOIs	https://doi.org/10.1016/S0920-5632(01)01736-4
State	Published - Mar 2002

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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10.1016/S0920-5632(01)01736-4

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@article{24f39d3b34944391bff994168817b145,

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

abstract = "We present preliminary results [1] 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 αs2a2, a4 Symanzik improved gauge action and an order αsa2, a4 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.",

author = "C. Bernard and T. Burch and S. Datta and DeGrand, {T. A.} and DeTar, {C. E.} and Steven Gottlieb and Heller, {U. M.} and K. Orginos and Sugar, {R. L.} and D. Toussaint",

note = "Funding Information: This work is supported by the US National Science Foundation and Department of Energy and used computer resources at Florida State University (SP), NERSC, NPACI, FNAL, and the University of Utah (CHPC).",

year = "2002",

month = mar,

doi = "10.1016/S0920-5632(01)01736-4",

language = "English (US)",

volume = "106-107",

pages = "429--431",

journal = "Nuclear Physics B - Proceedings Supplements",

issn = "0920-5632",

publisher = "Elsevier B.V.",

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TY - JOUR

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

AU - Bernard, C.

AU - Burch, T.

AU - Datta, S.

AU - DeGrand, T. A.

AU - DeTar, C. E.

AU - Gottlieb, Steven

AU - Heller, U. M.

AU - Orginos, K.

AU - Sugar, R. L.

AU - Toussaint, D.

N1 - Funding Information: This work is supported by the US National Science Foundation and Department of Energy and used computer resources at Florida State University (SP), NERSC, NPACI, FNAL, and the University of Utah (CHPC).

PY - 2002/3

Y1 - 2002/3

N2 - We present preliminary results [1] 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 αs2a2, a4 Symanzik improved gauge action and an order αsa2, a4 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 [1] 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 αs2a2, a4 Symanzik improved gauge action and an order αsa2, a4 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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UR - http://www.scopus.com/inward/citedby.url?scp=0036525192&partnerID=8YFLogxK

U2 - 10.1016/S0920-5632(01)01736-4

DO - 10.1016/S0920-5632(01)01736-4

M3 - Article

AN - SCOPUS:0036525192

SN - 0920-5632

VL - 106-107

SP - 429

EP - 431

JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

ER -

Thermodynamics with 3 and 2+1 flavors improved staggered quarks

Abstract

ASJC Scopus subject areas

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