Primordial torsion fields as an explanation of the anisotropy in cosmological electromagnetic propagation

被引：17

作者：

Dobado, A ^{[1
]}

Maroto, AL

机构：

[1] Univ Complutense Madrid, Dept Fis Teor, E-28040 Madrid, Spain

[2] Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain

来源：

MODERN PHYSICS LETTERS A | 1997年 / 12卷 / 38期

关键词：

D O I：

10.1142/S0217732397003125

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this letter we provide a simple explanation of the recent finding of anisotropy in electromagnetic (EM) propagation claimed by Nodland and Ralston. We consider, as a possible origin of such effect, the effective coupling between EM fields and some tiny background torsion field. The coupling is obtained after integrating out charged fermions, it is gauge-invariant and does not require the introduction of any new physics.

引用

页码：3003 / 3007

页数：5

共 15 条

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Nodland, B ;

Ralston, JP .

PHYSICAL REVIEW LETTERS, 1997, 78 (16) :3043-3046

[12] Appropriate null hypothesis for cosmological birefringence - Reply [J].

Nodland, B ;

Ralston, JP .

PHYSICAL REVIEW LETTERS, 1997, 79 (10) :1958-1958

[13]

NODLAND B, ASTROPH9708114

[14]

NODLAND B, ASTROPH9706126

[15] Observational evidence against birefringence over cosmological distances [J].

Wardle, JFC ;

Perley, RA ;

Cohen, MH .

PHYSICAL REVIEW LETTERS, 1997, 79 (10) :1801-1804

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