Quark Mass and Flavour Dependence of the QCD Phase Transition

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dc.creatorKarsch, F.
dc.creatorLaermann, E.
dc.creatorPeikert, A.
dc.date2000-12-20
dc.date.accessioned2026-07-07T10:51:56Z
dc.date.available2026-07-07T10:51:56Z
dc.descriptionWe 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 m_PS. 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_t=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 = 800 MeV and screening sets in at distances r = 0.3 fm.
dc.description25 pages, LaTeX2e File, 11 EPS-files
dc.identifierhttps://arxiv.org/abs/hep-lat/0012023
dc.identifierhttp://arxiv.org/abs/hep-lat/0012023
dc.identifierNucl.Phys.B605:579-599,2001
dc.identifierdoi:10.1016/S0550-3213(01)00200-0
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184993
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Experiment
dc.subjectNuclear Theory
dc.titleQuark Mass and Flavour Dependence of the QCD Phase Transition
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