Equation of state in (2+1)-flavor QCD with gradient flow
Equation of state in (2+1)-flavor QCD with gradient flow
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DOI：
10.22323/1.256.0063
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发表时间：
2016-10
期刊：
影响因子：
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通讯作者：
K. Kanaya;S. Ejiri;R. Iwami;M. Kitazawa;Hiroshi Suzuki;Y. Taniguchi;T. Umeda;N. Wakabayashi
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文献类型：
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作者：
K. Kanaya;S. Ejiri;R. Iwami;M. Kitazawa;Hiroshi Suzuki;Y. Taniguchi;T. Umeda;N. Wakabayashi
利用Makino和Suzuki提出的基于梯度流的改进Wilson夸克的方法，研究了有限温度（2+1）味QCD的能量-动量张量和态方程。我们发现梯度流的结果与以前使用T积分方法在T约10)的结果一致，而在T >约350 MeV （Nt <约8）时发现不一致，可能是由于小Nt晶格伪像。我们还报道了用Hieda和Suzuki的方法研究重整化手性凝聚及其断开磁化率的结果。结果表明，即使对于明显违反手性对称的wilson型夸克，预期的手性恢复交叉也有明显的信号。
The energy-momentum tensor and equation of state are studied in finite-temperature (2+1)-flavor QCD with improved Wilson quarks using the method proposed by Makino and Suzuki based on the gradient flow. We find that the results of the gradient flow are consistent with the previous results using the T-integration method at T about10), while a disagreement is found at T > about 350 MeV (Nt < about 8) presumably due to the small-Nt lattice artifact. We also report on the results onthe renormalized chiral condensate and its disconnected susceptibility using the method of Hieda and Suzuki. The results show a clear signal of the expected chiral restoration crossover even with Wilson-type quarks which violate the chiral symmetry explicitly.