Large-scale magnetic fields from inflation due to Chern-Simons-like effective interaction
Astrophysics
2008-12-18 v5 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We discuss the generation of large-scale magnetic fields due to the breaking of the conformal invariance in the electromagnetic field through the -even dimension-six Chern-Simons-like effective interaction with a fermion current in inflationary cosmology. It is shown that the magnetic fields on 1Mpc scale with the field strength of G at the present time can be generated even for the scale of the effective interaction being the Planck scale.
Keywords
Cite
@article{arxiv.0806.1856,
title = {Large-scale magnetic fields from inflation due to Chern-Simons-like effective interaction},
author = {K. Bamba and C. Q. Geng and S. H. Ho},
journal= {arXiv preprint arXiv:0806.1856},
year = {2008}
}
Comments
13 pages, 2 figures, additional explanations included