Magnetic fields from second-order interactions
General Relativity and Quantum Cosmology
2014-03-24 v1
Abstract
It is well known that when two types of perturbations interact in cosmological perturbation theory, the interaction may lead to the generation of a third type. In this article we discuss the generation of magnetic fields from such interactions. We determine conditions under which the interaction of a first-order magnetic field with a first-order scalar-or vector-, or tensor-perturbations would lead to the generation of second order magnetic field. The analysis is done in a covariant-index-free approach, but could be done in the standard covariant indexed-approach.
Cite
@article{arxiv.1403.5505,
title = {Magnetic fields from second-order interactions},
author = {Bob Osano},
journal= {arXiv preprint arXiv:1403.5505},
year = {2014}
}