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arXiv · 2004.07269

Primordial Magnetogenesis in a Bouncing Universe

E. Frion·N. Pinto-Neto·S. D. P. Vitenti·S. E. Perez Bergliaffa
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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 $RF_{\mu \nu}F^{\mu \nu}$, 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 $n_B=6$. It is also shown that the electromagnetic backreaction is not an issue in the model under scrutiny.

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E. Frion, N. Pinto-Neto, S. D. P. Vitenti, S. E. Perez Bergliaffa. 2020-04-15. Primordial Magnetogenesis in a Bouncing Universe. https://doi.org/10.1103/physrevd.101.103503

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