Generation of large-scale magnetic fields from inflation in teleparallelism

被引：26

作者：

Bamba, Kazuharu ^{[1
,3
]}

Geng, Chao-Qiang ^{[2
,3
,4
]}

Luo, Ling-Wei ^{[2
,4
]}

机构：

[1] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Univers, Nagoya, Aichi 4648602, Japan

[2] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan

[3] Natl Ctr Theoret Sci, Div Phys, Hsinchu 300, Taiwan

[4] Chongqing Univ Posts & Telecommun, Coll Math & Phys, Chongqing 400065, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2012年 / 10期

关键词：

modified gravity; primordial magnetic fields; magnetic fields; inflation; PROBE WMAP OBSERVATIONS; HUBBLE-SPACE-TELESCOPE; MODIFIED GRAVITY; PHASE-TRANSITION; DARK ENERGY; CONSTRAINTS; PERTURBATIONS; POLARIZATION; DYNAMICS; MODELS;

D O I：

10.1088/1475-7516/2012/10/058

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We explore the generation of large-scale magnetic fields from inflation in teleparallelism, in which the gravitational theory is described by the torsion scalar instead of the scalar curvature in general relativity. In particular, we examine the case that the conformal invariance of the electromagnetic field during inflation is broken by a non-minimal gravitational coupling between the torsion scalar and the electromagnetic field. It is shown that for a power-law type coupling, the magnetic field on 1 Mpc scale with its strength of similar to 10(-9) G at the present time can be generated.

引用

页数：16

共 140 条

[1] CONSTRAINTS ON GENERALIZED INFLATIONARY COSMOLOGIES [J].