Quark mass and flavour dependence of the QCD phase transition

Karsch F, Laermann E, Peikert A (2001)
NUCLEAR PHYSICS B 605(1-3): 579-599.

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Zeitschriftenaufsatz | Veröffentlicht | Englisch
Abstract / Bemerkung
We analyze the quark mass and flavour dependence of the QCD phase transition temperature. When the lightest pseudo-scalar meson mass (m(PS)) is larger than 2 GeV the critical temperature is controlled by the gluonic sector of QCD alone. For smaller values of the lightest meson mass the pseudo-critical temperature decreases slowly with mps. For a large regime of meson masses the pseudo-critical temperature of 2-flavour QCD is about 10% larger than in the 3-flavour case. On lattices with temporal extent N-tau = 4 an extrapolation to the chiral limit yields T-c = (173 +/- 8) MeV and (154 +/- 8) MeV for 2 and 3-flavour QCD, respectively. We also analyze dynamical quark mass effects on the screening of the heavy quark potential. A detailed analysis of the heavy quark free energy in 3-flavour QCD shows that close to T-c screening effects are approximately quark mass independent already for pseudo-scalar meson masses m(PS) less than or equal to 800 MeV and screening sets in at distances r similar or equal to 0.3 fm. (C) 2001 Elsevier Science B.V. All rights reserved.
Erscheinungsjahr
Zeitschriftentitel
NUCLEAR PHYSICS B
Band
605
Zeitschriftennummer
1-3
Seite
579-599
ISSN
PUB-ID

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Karsch F, Laermann E, Peikert A. Quark mass and flavour dependence of the QCD phase transition. NUCLEAR PHYSICS B. 2001;605(1-3):579-599.
Karsch, F., Laermann, E., & Peikert, A. (2001). Quark mass and flavour dependence of the QCD phase transition. NUCLEAR PHYSICS B, 605(1-3), 579-599. doi:10.1016/S0550-3213(01)00200-0
Karsch, F., Laermann, E., and Peikert, A. (2001). Quark mass and flavour dependence of the QCD phase transition. NUCLEAR PHYSICS B 605, 579-599.
Karsch, F., Laermann, E., & Peikert, A., 2001. Quark mass and flavour dependence of the QCD phase transition. NUCLEAR PHYSICS B, 605(1-3), p 579-599.
F. Karsch, E. Laermann, and A. Peikert, “Quark mass and flavour dependence of the QCD phase transition”, NUCLEAR PHYSICS B, vol. 605, 2001, pp. 579-599.
Karsch, F., Laermann, E., Peikert, A.: Quark mass and flavour dependence of the QCD phase transition. NUCLEAR PHYSICS B. 605, 579-599 (2001).
Karsch, Frithjof, Laermann, Edwin, and Peikert, A. “Quark mass and flavour dependence of the QCD phase transition”. NUCLEAR PHYSICS B 605.1-3 (2001): 579-599.

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arXiv: hep-lat/0012023

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