论文标题
平行电磁场在三种味道Nambu-Jona-Lasinio模型中的影响
Effects of a parallel electromagnetic field in three-flavor Nambu--Jona-Lasinio model
论文作者
论文摘要
在这项工作中，我们探讨了有效的三种风味nambu-jona-lasinio模型中QCD系统的基态和相关的集体模式。从中性手性冷凝物的功能中，我们的研究中确定了三个关键EM领域：$ e \ bar {i} _2 _2^{c_i}〜（i = 1,2,3）$。此外，还发现了QCD和QED异常之间的竞争：$π_ {\ rm d}^*$和$π_ {\ rm s}^*$的负面竞争是所有口味的QCD异常优势的信号，以及$π_ {\ rm s}}^*^*^*^*^*^*^*^**^*^**^** $ e \ bar {i} _2^{c_1} $表示QED异常优势，奇怪的Quark。对于最低的中性集体模式，$π$和$ h $模式的质量在关键EM领域周围降低至零，并且标量伪符号组件在$σ$和$ h $模式之间交换，正如交叉结构中可以看到的那样。
In this work, we explore the ground state of QCD system and the relevant collective modes in a parallel electromagnetic (EM) field within the effective three-flavor Nambu--Jona-Lasinio model. From the features of neutral chiral condensates, three critical EM fields are identified in our study: $e\bar{I}_2^{c_i}~(i=1,2,3)$. Moreover, competition between QCD and QED anomalies is found: the negativeness of $π_{\rm d}^*$ and $π_{\rm s}^*$ is a signal of QCD anomaly dominance for all the flavors, and the positiveness of $π_{\rm s}^*$ beyond $e\bar{I}_2^{c_1}$ indicates QED anomaly dominance for strange quark. For the lowest-lying neutral collective modes, the masses of $Π$ and $H$ modes reduce to zero around the critical EM fields and the scalar-pseudoscalar components are exchanged between $Σ$ and $H$ modes, as can be seen in the crossing structure.
