QCD transition temperature: approaching the continuum on the lattice

Y. Aoki, S. Borsanyi, S. Durr, Z. Fodor, S. Katz, S. Krieg, K. K. Szabo

Research output: Contribution to journalArticle

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Abstract

In order to clarify the source of the discrepancy between our previous transition temperature determination [Phys. Lett. B 643, 46 (2006)] and that of the Bielefeld-Brookhaven-Columbia-Riken collaboration we improved our calculations by taking even smaller lattice spacings (Nt = 12 and Nt = 16 at one point) and by using physical quark masses also for the T = 0 quantities. In addition to the kaon decay constant used for scale setting we determine four quantities (masses of the Ω baryon, k*(892) and φ{symbol}(1020) mesons and the pion decay constant) which are found to agree with experiment. This implies that - independently of which of these quantities is used to set the overall scale - the same results are obtained within a few percent. At finite temperature we use finer lattices down to a ≲ 0.1 fm. Our new results confirm completely our previous findings. We compare the results with those of the 'hotQCD' collaboration.

Original languageEnglish
JournalNuclear Physics A
Volume830
Issue number1-4
DOIs
Publication statusPublished - Nov 1 2009

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quantum chromodynamics
transition temperature
continuums
Columbia (Orbiter)
decay
baryons
pions
mesons
spacing
quarks
temperature

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

QCD transition temperature : approaching the continuum on the lattice. / Aoki, Y.; Borsanyi, S.; Durr, S.; Fodor, Z.; Katz, S.; Krieg, S.; Szabo, K. K.

In: Nuclear Physics A, Vol. 830, No. 1-4, 01.11.2009.

Research output: Contribution to journalArticle

Aoki, Y. ; Borsanyi, S. ; Durr, S. ; Fodor, Z. ; Katz, S. ; Krieg, S. ; Szabo, K. K. / QCD transition temperature : approaching the continuum on the lattice. In: Nuclear Physics A. 2009 ; Vol. 830, No. 1-4.
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