Maxwell-Kosteleck\'y Electromagnetism and Cosmic Magnetization
Astrophysics
2011-03-28 v2
Abstract
The Lorentz violating term in the photon sector of Standard Model Extension, \mathcal{L}_K = -{\frac14} (k_F)_{\alpha \beta \mu \nu} F^{\alpha \beta} F^{\mu \nu} (here referred to as the Kosteleck\'{y} term), breaks conformal invariance of electromagnetism and enables a superadiabatic amplification of magnetic vacuum fluctuations during inflation. For a wide range of values of parameters defining Lorentz symmetry violation and inflation, the present-day magnetic field can have an intensity of order of nanogauss on megaparsec scales and then could explain the large-scale magnetization of the universe.
Keywords
Cite
@article{arxiv.0812.3745,
title = {Maxwell-Kosteleck\'y Electromagnetism and Cosmic Magnetization},
author = {L. Campanelli and P. Cea},
journal= {arXiv preprint arXiv:0812.3745},
year = {2011}
}
Comments
10 pages, 1 figure, minor revisions; accepted for publication in Physics Letters B