摘要We present the results for the transition temperature of quantum chromodynamics (QCD) with two degenerate flavours (Nf=2) of Wilson quarks. On lattice 83×4 with 4 representing the temporal extent, by using the Ferrenberg--Swendsen reweighting method, we determine the critical β=6/g2 where the transition occurs, g is the coupling constant. On lattice 82×20×4, by using the axial vector Ward--Takahashi identity, we calculate the current quark mass amq, a is the lattice spacing. Assuming the O(4) scaling, the critical β in the chiral limit is determined. We calculate the ρ meson mass amρ at zero temperature on lattice 83×20. By using the experimental ρ meson mass to set the scale, we obtain 194(1)MeV for the transition temperature in the chiral limit.
Abstract：We present the results for the transition temperature of quantum chromodynamics (QCD) with two degenerate flavours (Nf=2) of Wilson quarks. On lattice 83×4 with 4 representing the temporal extent, by using the Ferrenberg--Swendsen reweighting method, we determine the critical β=6/g2 where the transition occurs, g is the coupling constant. On lattice 82×20×4, by using the axial vector Ward--Takahashi identity, we calculate the current quark mass amq, a is the lattice spacing. Assuming the O(4) scaling, the critical β in the chiral limit is determined. We calculate the ρ meson mass amρ at zero temperature on lattice 83×20. By using the experimental ρ meson mass to set the scale, we obtain 194(1)MeV for the transition temperature in the chiral limit.
WU Liang-Kai;LUO Xiang-Qian. Transition Temperature of Two-Degenerate-Flavour QCD in the Chiral Limit[J]. 中国物理快报, 2007, 24(10): 2769-2772.
WU Liang-Kai, LUO Xiang-Qian. Transition Temperature of Two-Degenerate-Flavour QCD in the Chiral Limit. Chin. Phys. Lett., 2007, 24(10): 2769-2772.
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2007, Vol. 24 
