Generation of large-scale magnetic fields from inflation in teleparallelism

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 electromagne...

Full description

Saved in:
Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2012-10, Vol.2012 (10), p.i-15
Main Authors: Bamba, Kazuharu, Geng, Chao-Qiang, Luo, Ling-Wei
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
CONFORMAL INVARIANCE
COSMOLOGY
COUPLING
ELECTROMAGNETIC FIELDS
GENERAL RELATIVITY THEORY
Inflation
INFLATIONARY UNIVERSE
INFLATONS
Joining
MAGNETIC FIELDS
Mathematical analysis
Relativity
SCALARS
TORSION
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 held on 1 Mpc scale with its strength of ~ 10 super(9) G at the present time can be generated.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2012/10/058