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arXiv 2102.09916hep-lathep-phnucl-th
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筛选质量接近手性限度

Screening masses towards chiral limit

Simon Dentinger, Olaf Kaczmarek, Anirban Lahiri

摘要:

一个可能的有效恢复反常的$U_A(1)$对称性将对QCD的全局相图产生重要的影响。在这项工作中,我们调查的有效恢复的$U_A(1)$通过计算标量和赝标量屏蔽质量和相应的磁化率,物理和低于物理π质量。采用(2+1)-味HISQ离散格式,以奇异夸克质量为物理量,进行了计算.基于具有三种不同时间范围的晶格,给出了连续外推标量和赝标量质量的初步计算。讨论了$N_τ=8$晶格中标量和赝标量亚稳结构的差异。

英文摘要:

A possible effective restoration of the anomalous $U_A(1)$ symmetry would have a non-trivial effect on the global phase diagram of QCD. In this work we investigate the effective restoration of the $U_A(1)$ through the calculation of scalar and pseudo-scalar screening masses and corresponding susceptibilities, for physical and lower than physical pion masses. Calculations have been performed in (2+1)-flavor HISQ discretization scheme with a physical value of the strange quark mass. Preliminary calculations of the continuum extrapolated scalar and pseudo-scalar masses are presented, based on lattices with three different temporal extent. Non-trivial structure of the difference between scalar and pseudo-scalar susceptibilites are discussed for $N_τ=8$ lattices.

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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