Generation of circular polarization of the CMB

被引：61
|
作者：
Zarei, M. [1 ]
Bavarsad, E. [1 ]
Haghighat, M. [1 ]
Mohammadi, R. [1 ]
Motie, I. [1 ]
Rezaei, Z. [1 ]
机构：
[1] Isfahan Univ Technol, Dept Phys, Esfahan 8415683111, Iran
来源：
PHYSICAL REVIEW D | 2010年 / 81卷 / 08期
关键词：
STANDARD MODEL;
D O I：
10.1103/PhysRevD.81.084035
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
According to the standard cosmology, near the last scattering surface, the photons scattered via Compton scattering are just linearly polarized and then the primordial circular polarization of the cosmic microwave background (CMB) photons is zero. In this work we show that CMB polarization acquires a small degree of circular polarization when a background magnetic field is considered or the quantum electrodynamic sector of standard model is extended by Lorentz-noninvariant operators as well as noncommutativity. The existence of circular polarization for the CMB radiation may be verified during future observation programs, and it represents a possible new channel for investigating new physics effects.
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页数：14
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