Distribution of energy-momentum tensor around a static quark in the deconfined phase of SU(3) Yang-Mills theory
Distribution of energy-momentum tensor around a static quark in the deconfined phase of SU(3) Yang-Mills theory
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SU(3) Yang-Mills 理论解禁相中静态夸克周围能量动量张量的分布
DOI：
10.1103/physrevd.102.114522
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发表时间：
2020
影响因子：
5
通讯作者：
and T. Hatsuda
中科院分区：
文献类型：
--
作者：
R. Yanagihara;M. Kitazawa;M. Asakawa;and T. Hatsuda
能量动量张量（EMT）表征了真空和热介质在彩色电磁场作用下的响应。我们用梯度流的形式定义了EMT，并研究了在晶格上的SU(3) Yang-Mills理论的定相中，EMT在静态夸克周围的空间分布。虽然EMT在径向和横向上的分布除了符号外没有显著差异，但在临界温度附近的时间分量与空间分量有很大不同。这与前阶热摄动理论的预测相反。EMT分布的晶格数据也表明了在远距离的热屏蔽和近距离的微扰行为。
The energy-momentum tensor (EMT) characterizes the response of the vacuum as well as the thermal medium under the color electromagnetic fields. We define the EMT by means of the gradient-flow formalism and study its spatial distribution around a static quark in the deconfined phase of SU(3) Yang-Mills theory on the lattice. Although no significant difference can be seen between the EMT distributions in the radial and transverse directions except for the sign, the temporal component is substantially different from the spatial ones near the critical temperature. This is in contrast to the prediction of the leading-order thermal perturbation theory. The lattice data of the EMT distribution also indicate the thermal screening at long distance and the perturbative behavior at short distance.