Energy-momentum tensor correlation function in N_f=2+1 full QCD at finite temperature
Energy-momentum tensor correlation function in N_f=2+1 full QCD at finite temperature
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N_f=2 1 有限温度下完整 QCD 的能量动量张量相关函数
DOI：
10.1051/epjconf/201817507013
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发表时间：
2018
影响因子：
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通讯作者：
Takashi Umeda
中科院分区：
文献类型：
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作者：
Yusuke Taniguchi;Shinji Ejiri;Kazuyuki Kanaya;Masakiyo Kitazawa;Asobu Suzuki;Hiroshi Suzuki;Takashi Umeda
本文用梯度流方法测量了有限温度下Nf = 2 + 1全QCD中规范场和夸克场的非微扰重整化能量动量张量的关联函数。我们的主要兴趣是研究能量动量张量守恒定律，并测试线性响应关系是否正确实现的熵密度。利用线性响应关系，我们从相关函数计算比热。我们采用非微扰改进的Wilson费米子和Iwasaki规范作用量，在细格点间距= 0：07 fm.在本文中，温度被限制到一个单一的值T <$232 MeV。u，d夸克的质量相当重，m π=mρ = 0：63，而s夸克的质量近似为它的物理值。
We measure correlation functions of the nonperturbatively renormalized energy-momentum tensor inNf= 2 + 1 full QCD at finite temperature by applying the gradient flow method both to the gauge and quark fields. Our main interest is to study the conservation law of the energy-momentum tensor and to test whether the linear response relation is properly realized for the entropy density. By using the linear response relation we calculate the specific heat from the correlation function. We adopt the nonperturba-tively improved Wilson fermion and Iwasaki gauge action at a fine lattice spacing = 0:07 fm. In this paper the temperature is limited to a single valueT≃ 232 MeV. The u, d quark mass is rather heavy withmπ=mρ≃ 0:63 while the s quark mass is set to approximately its physical value.