Large-scale magnetic fields from inflation due to a $CPT$-even Chern-Simons-like term with Kalb-Ramond and scalar fields
Cosmology and Nongalactic Astrophysics
2015-05-30 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We investigate 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 by taking account of the dynamical Kalb-Ramond and scalar fields in inflationary cosmology. It is explicitly demonstrated that the magnetic fields on 1Mpc scale with the field strength of G at the present time can be induced.
Keywords
Cite
@article{arxiv.1108.0151,
title = {Large-scale magnetic fields from inflation due to a $CPT$-even Chern-Simons-like term with Kalb-Ramond and scalar fields},
author = {Kazuharu Bamba and C. Q. Geng and S. H. Ho and W. F. Kao},
journal= {arXiv preprint arXiv:1108.0151},
year = {2015}
}
Comments
18 pages, 6 figures, version accepted for publication in Eur. Phys. J. C