Cosmological symmetry breaking and generation of electromagnetic field

Abstract:
Cosmological phase transitions accompanied by some kind of symmetry breaking would directly cause the production of primordial magnetic field and/or indirectly seed it by the creation of topological defects. Moreover, such procedure inevitably affect the cosmic background radiation and it may be observed today. Motivated by the modified gravity theories associated with the vacuum energy problem, we discuss their application to the cosmological electromagnetic field generation.

Presentation