High temperature QCD with three flavors of improved staggered quarks

C. Bernard, T. Burch, C. E. DeTar, Steven Gottlieb, Eric Gregory, U. M. Heller, J. Osborn, R. L. Sugar, William D Toussaint

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We present an update of our study of high temperature QCD with three flavors of quarks, using a Symanzik improved gauge action and the Asqtad staggered quark action. Simulations are being carried out on lattices with Nt = 4, 6 and 8 for the case of three degenerate quarks with masses less than or equal to the strange quark mass, ms, and on lattices with Nt = 6 and 8 for degenerate up and down quarks with masses in the range 0.2ms ≤ mu,d ≤ 0.6ms, and the strange quark fixed near its physical value. We also report on first computations of quark number susceptibilities with the Asqtad action. These susceptibilities are of interest because they can be related to event-by-event fluctuations in heavy ion collision experiments. Use of the improved quark action leads to a substantial reduction in lattice artifacts. This can be seen already for free fermions and carries over into our results for QCD.

Original languageEnglish (US)
Pages (from-to)523-528
Number of pages6
JournalNuclear Physics B (Proceedings Supplements)
Volume119
DOIs
StatePublished - May 2003

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quantum chromodynamics
quarks
magnetic permeability
ionic collisions
artifacts
fermions
simulation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

High temperature QCD with three flavors of improved staggered quarks. / Bernard, C.; Burch, T.; DeTar, C. E.; Gottlieb, Steven; Gregory, Eric; Heller, U. M.; Osborn, J.; Sugar, R. L.; Toussaint, William D.

In: Nuclear Physics B (Proceedings Supplements), Vol. 119, 05.2003, p. 523-528.

Research output: Contribution to journalArticle

Bernard, C, Burch, T, DeTar, CE, Gottlieb, S, Gregory, E, Heller, UM, Osborn, J, Sugar, RL & Toussaint, WD 2003, 'High temperature QCD with three flavors of improved staggered quarks', Nuclear Physics B (Proceedings Supplements), vol. 119, pp. 523-528. https://doi.org/10.1016/S0920-5632(03)01603-7
Bernard, C. ; Burch, T. ; DeTar, C. E. ; Gottlieb, Steven ; Gregory, Eric ; Heller, U. M. ; Osborn, J. ; Sugar, R. L. ; Toussaint, William D. / High temperature QCD with three flavors of improved staggered quarks. In: Nuclear Physics B (Proceedings Supplements). 2003 ; Vol. 119. pp. 523-528.
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