论文标题
在弯曲的空间中的光子螺旋和量子异常
Photon helicity and quantum anomalies in curved spacetimes
论文作者
论文摘要
我们比较了文献中存在的几个光子螺旋（磁性，电气，电磁）的定义。根据这些定义，在弯曲的时空量子异常中可以破坏螺旋性保护对光子的不同影响：线性极化的旋转或圆形极化的产生。我们从明显不变的Lagrangians开始得出与二元转换相关的Noether电流。
We compare several definitions of photon helicity (magnetic, electric, electromagnetic) present in literature. In curved spacetime quantum anomalies can spoil helicity conservation inducing, according to these definitions, different effects on photons: either rotation of linear polarization or production of circular polarization. We derive the Noether current associated with duality transformations starting from manifestly invariant Lagrangians.
