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Transition Temperature of Two-Degenerate-Flavour QCD in the Chiral Limit |
| WU Liang-Kai;LUO Xiang-Qian |
| School of Physics and Engineering, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275 |
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| Cite this article: |
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WU Liang-Kai, LUO Xiang-Qian 2007 Chin. Phys. Lett. 24 2769-2772 |
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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.
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| Keywords:
11.10.Wx
12.38.Gc
11.15.Ha
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Received: 17 June 2007
Published: 20 September 2007
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