Year: 2020
Type: article
Abstract: We investigate primordial magnetogenesis and the evolution of the electromagnetic field through a quantum bounce P. Peter, E. J. Pinho, and N. Pinto-Neto, Phys. Rev. D 75, 023516 (2007)., 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 $R{F}_{\ensuremath{\mu}\ensuremath{\nu}}{F}^{\ensuremath{\mu}\ensuremath{\nu}}$, we find acceptable magnetic field seeds within the current observational constraints at 1 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.
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G8371000489
OpenAlex ID: W3016812599