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arXiv 2203.16059hep-lathep-ph
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具有手征费米子的$N_f=2+1$格点量子色动力学中高温轴向U(1)对称性

Axial U(1) symmetry at high temperatures in $N_f=2+1$ lattice QCD with chiral fermions

Sinya Aoki, Yasumichi Aoki, Hidenori Fukaya, Shoji Hashimoto, Issaku Kanamori, Takashi Kaneko, Yoshifumi Nakamura, Christian Rohrhofer, Kei Suzuki

摘要:

本文研究了手征费米子作用下$N_f=2+1$格点量子色动力学高温相的$U(1)_A$反常。规范系综是用莫比乌斯畴壁(MDW)费米子产生的,在测量中,行列式被重新加权为重叠费米子的行列式。我们报告的重叠狄拉克光谱,$U(1)_A$的磁化率,拓扑磁化率在$T=204$和$175$兆电子伏的结果。

英文摘要:

We study the $U(1)_A$ anomaly in the high-temperature phase of $N_f=2+1$ lattice QCD with chiral fermions. Gauge ensembles are generated with Möbius domain-wall (MDW) fermions, and in the measurements the determinant is reweighted to that of overlap fermions. We report the results for the overlap Dirac spectrum, $U(1)_A$ susceptibility, and topological susceptibility at $T=204$ and $175$ MeV.

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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