具有广义$θ$真空的奇偶奇畴结构
Parity Odd Domain Structure with Generalized $θ$ Vacuum
摘要：
最近的重离子碰撞实验表明，由强相互作用拉格朗日量中的$θ$项产生宇称奇畴是可能的。$θ$项来源于QCD真空的非平凡解，称为$θ$真空，并且$θ$的值被取为奇宇称域中时空坐标的函数。这意味着我们必须在每一点上考虑不同的理论，因此我们需要设计一种新的方法来定义QCD真空。在这封信中，我们提出了一种方法来推广$θ$真空利用2维凝聚和计算宇称奇域结构作为统一的规范切片定义的2维凝聚的常数值。
英文摘要：
Recent experiments in heavy ion collisions have shown the possibility of creating parity-odd domains resulting from the $θ$ term in strong interaction Lagrangian. The $θ$ term originates from the nontrivial solution of QCD vacuum known as the $θ$ vacuum, and the value of $θ$ is taken to be a function of spacetime coordinates in the parity-odd domains. This means that we have to consider different theories at each point so that we need to devise a new approach to define the QCD vacuum. In this Letter, we suggest a method to generalize the $θ$ vacuum by exploiting the dimension 2 condensates and to calculate the parity-odd domain structure as the union of gauge slices defined by the constant value of dimension 2 condensate.
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