Scale-invariant Helical Magnetic Fields from Inflation
Cosmology and Nongalactic Astrophysics
2019-09-11 v1 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
We discuss a model which can generate scale-invariant helical magnetic fields on large scales (Mpc) in the primordial universe. It is also shown that the electric conductivity becomes significant and terminates magnetogenesis even before reheating is completed. By solving the electromagnetic dynamics taking conductivity into account, we find that magnetic fields with amplitude at present can be generated without encountering a backreaction or strong coupling problem.
Cite
@article{arxiv.1904.11428,
title = {Scale-invariant Helical Magnetic Fields from Inflation},
author = {Tomohiro Fujita and Ruth Durrer},
journal= {arXiv preprint arXiv:1904.11428},
year = {2019}
}
Comments
24 pages, 6 figures