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arXiv 1711.07537hep-lat
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有限温度下$N_f=2$ QCD的拓扑敏感性

Topological Susceptibility in $N_f=2$ QCD at Finite Temperature

S. Aoki, Y. Aoki, G. Cossu, H. Fukaya, S. Hashimoto, K. Suzuki

摘要:

本文利用莫比乌斯畴壁费米子研究了有限温度下$N_f=2$ QCD中的拓扑荷。本文研究了在不同温度$T\ (>T_c)$和夸克质量下,由重迭狄拉克算符和胶子算符定义的拓扑荷的磁化率$χ_t$.在夸克质量低于一定值时,观察到磁化率的强烈抑制。讨论了与$U_A(1)$修复的关系。

英文摘要:

We study the topological charge in $N_f=2$ QCD at finite temperature using Möbius domain-wall fermions. The susceptibility $χ_t$ of the topological charge defined either by the index of overlap Dirac operator or a gluonic operator is investigated at several values of temperature $T\ (>T_c)$ varying the quark mass. A strong suppression of the susceptibility is observed below a certain value of the quark mass. The relation with the restoration of $U_A(1)$ is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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