论文标题
轴轴电动力学中的不可变形对称性
Non-invertible symmetries in axion electrodynamics
论文作者
论文摘要
我们在$（3+1）$ - 尺寸轴轴线电动动力学中研究不可逆转的全局对称性，具有无质量的轴，无质量的光子。除了先前已知的不可固化的0型偏移对称性外，我们还发现了与光子运动方程相关的不可糊化的1形对称性。不可固化的对称缺陷的相关函数导致与轴和光子的Bianchi身份相关的可逆1和2形对称缺陷。就相关函数而言，我们讨论了扩展对象的几种现象，例如轴承域壁上的诱导电荷和分数轴突算子在磁通管的相交点上从全球对称性的角度来看。
We study non-invertible global symmetries in $(3+1)$-dimensional axion electrodynamics with a massless axion and a massless photon. In addition to a previously known non-invertible 0-form shift symmetry of the axion, we find a non-invertible 1-form symmetry associated with the equation of motion for the photon. Correlation functions of non-invertible symmetry defects lead to invertible 1- and 2-form symmetry defects associated with Bianchi identities for the axion and photon. In terms of the correlation functions, we discuss several phenomena for extended objects, such as induced fractional electric charges on axionic domain walls and fractional axionic operators on intersection points of magnetic flux tubes from the viewpoint of global symmetries.
