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arXiv 0910.2392hep-lathep-ph
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用Nf=2的非微扰改进的Wilson费米子探测有限温度相变

Probing the finite temperature phase transition with Nf=2 nonperturbatively improved Wilson fermions

V. G. Bornyakov, R. Horsley, S. M. Morozov, Y. Nakamura, M. I. Polikarpov, P. E. L. Rakow, G. Schierholz, T. Suzuki

摘要:

对Nf=2的非微扰改进的Wilson费米子的动力学味确定了临界温度和QCD有限温度相变的性质。计算是在时间范围Nt=12、10和8的大晶格上进行的,晶格间距下降到a = 0.075 fm。我们发现解禁闭和手性相变发生在相同的温度下。我们的结果与手征极限下的二级相变基本一致。在物理夸克质量下的临界温度为Tc = 174(3)(6)MeV。

英文摘要:

The critical temperature and the nature of the QCD finite temperature phase transition are determined for Nf=2 dynamical flavors of nonperturbatively improved Wilson fermions. The calculations are performed on large lattices with temporal extents Nt=12, 10 and 8, and lattice spacings down to a = 0.075 fm. We find the deconfinement and chiral phasetransitions to take place at the same temperature. Our results are in broad agreement with a second order phase transition in the chiral limit. The critical temperature at the physical quark mass is found to be Tc = 174(3)(6) MeV.

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