arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1812.04516hep-ph
收藏

手性和$U(1)_A$恢复:沃德恒等式和有效理论

Chiral and $U(1)_A$ restoration: Ward Identities and effective theories

A. Gómez Nicola, J. Ruiz de Elvira, A. Vioque-Rodríguez, S. Ferreres-Solé

摘要:

我们讨论了我们最近的结果关于手征和$U(1)_A$恢复,无论是从QCD沃德恒等式(WI)的形式的观点,并从有效的理论分析提供的$U(3)$手征微扰理论(ChPT)在有限温度下。我们的研究结果导致相关的结论手性合作伙伴的行为(在亲合性方面)在严格恢复的限制,并提供有用的结果,晶格分析。此外,它有助于理解晶格屏蔽质量在夸克凝聚组合方面的温度依赖性。U(3)ChPT计算支持WI分析中获得的结论。最后,讨论了热$f_0(500)$态在手征对称性恢复中的作用。

英文摘要:

We discuss our recent results regarding chiral and $U(1)_A$ restoration, both from the formal point of view of QCD Ward Identities (WI) and from an Effective Theory analysis provided by $U(3)$ Chiral Perturbation Theory (ChPT) at finite temperature. Our results lead to relevant conclusions regarding the behavior of chiral partners (in terms of susceptibilities) in the limit of exact restoration and provide useful results for lattice analysis. In addition, it helps to understand the temperature dependence of lattice screening masses in terms of quark condensate combinations. The U(3) ChPT calculation supports the conclusions obtained within the WI analysis. Finally, the role of the thermal $f_0(500)$ state in chiral symmetry restoration, regarding the scalar susceptibility, is also 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。

↑