Magnetogenesis in Cyclical Universe

Understand

We propose a simple solution to the magnetogenesis problem based on cyclic cosmology.

• It is demonstrated that magnetic fields, of sufficient strengths to account for the present observational bounds, can be created in the contracting phase preceding the beginning of the current cosmological cycle.
• The basic assumption of this model is that the Universe enters a contraction phase essentially empty, characterized by small seed electric fields.
• In this framework, there is no need for any new theoretical additions to explain magnetogenesis, such as new scalar fields or non-minimal couplings between curvature, scalar fields and the electromagnetic sector.