论文标题
全球3组对称性和X轴异常
Global 3-group symmetry and 't Hooft anomalies in axion electrodynamics
论文作者
论文摘要
我们研究了$（3+1）$尺寸的无质轴电动力学的高层结构。通过使用背景测量方法，我们表明，较高形式的对称性一定具有全局半分布3组（2划分的模块）结构，并且显示了3组的H Hooft异常。特别是，我们发现0形和1形对称性之间的立方混合'T Hooft异常，该异常特定于高层结构。
We investigate a higher-group structure of massless axion electrodynamics in $(3+1)$ dimensions. By using the background gauging method, we show that the higher-form symmetries necessarily have a global semistrict 3-group (2-crossed module) structure, and exhibit 't Hooft anomalies of the 3-group. In particular, we find a cubic mixed 't Hooft anomaly between 0-form and 1-form symmetries, which is specific to the higher-group structure.
