Photon helicity and quantum anomalies in curved spacetimes

被引：10
|
作者：
Galaverni, Matteo [1 ,2 ]
Gionti, S. J. Gabriele [1 ,3 ,4 ]
机构：
[1] Specola Vaticana, V-00120 Vatican City, Vatican City St, Vatican
[2] INAF OAS Bologna, Osservatorio Astrofis & Sci Spazio, Via Gobetti 101, I-40129 Bologna, Italy
[3] Univ Arizona, Vatican Observ Res Grp Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA
[4] Ist Nazl Fis Nucl, Lab Nazl Frascati, Via E Fermi 40, I-00044 Frascati, Italy
来源：
GENERAL RELATIVITY AND GRAVITATION | 2021年 / 53卷 / 04期
关键词：
Helicity; Duality; Quantum Anomalies; OPTICAL HELICITY; AXION HAIR; DUALITY SYMMETRY; POLARIZATION; CONSERVATION; CHIRALITY;
D O I：
10.1007/s10714-021-02817-z
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
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 in Minkowski spacetime.
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页数：19
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