Primordial Magnetogenesis in a Bouncing Universe
General Relativity and Quantum Cosmology
2020-05-11 v2 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
We investigate primordial magnetogenesis and the evolution of the electromagnetic field through a quantum bounce, in a model that starts in the far past from a contracting phase where only dust is present and the electromagnetic field is in the adiabatic quantum vacuum state. By including a coupling between curvature and electromagnetism of the form , we find acceptable magnetic field seeds within the current observational constraints at 1 mega-parsec (Mpc), and that the magnetic power spectrum evolves as a power-law with spectral index . It is also shown that the electromagnetic backreaction is not an issue in the model under scrutiny.
Cite
@article{arxiv.2004.07269,
title = {Primordial Magnetogenesis in a Bouncing Universe},
author = {E. Frion and N. Pinto-Neto and S. D. P. Vitenti and S. E. Perez Bergliaffa},
journal= {arXiv preprint arXiv:2004.07269},
year = {2020}
}
Comments
33 pages, 9 figures. Matches the published version in Physical Review D