Spin Hall effect of light in inhomogeneous axion field

被引：0
|
作者：
Hoseini, Mansoureh [1 ]
Mehrafarin, Mohammad [1 ]
机构：
[1] Amirkabir Univ Technol, Phys Dept, Tehran 15914, Iran
来源：
PHYSICS LETTERS B | 2020年 / 811卷
关键词：
Axion electrodynamics; Spin Hall effect; Cosmological birefringence; Conformal invariance; Inflation theory; POLARIZATION; TRANSPORT;
D O I：
10.1016/j.physletb.2020.135968
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the spin transport of light in weakly inhomogeneous axion field in a flat Robertson-Walker universe and derive the spin Hall effect for circularly polarized rays. Regarding primordial quantum fluctuations of the axion field in the de Sitter phase as the origin of the inhomogeneity, we show that the conformal invariance of the correlator determines the root-mean-square (r.m.s) fluctuation of the path of circularly polarized cosmic rays. We explain how the r.m.s fluctuation can be experimentally determined. (C) 2020 The Author(s). Published by Elsevier B.V.
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页数：5
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