Magnetogenesis in Matter - Ekpyrotic Bouncing Cosmology

Understand

In the recent past there have been many attempts to associate the generation of primordial magnetic seed fields with the inflationary era, but with limited success.

• We thus take a different approach by using a model for nonsingular bouncing cosmology.
• A coupling of the electromagnetic Lagrangian $F_{\mu\nu}F^{\mu\nu}$ with a non background scalar field has been considered for the breaking of conformal invariance.
• We have shown that non singular bouncing cosmology supports magnetogenesis evading the long standing back reaction and strong coupling problems which have plagued inflationary magnetogenesis.