Primordial Magnetic Fields and the puzzles of Cosmology

Synopsis

Cosmology has many puzzles yet to be solved - including disagreements about how fast the universe expands (Hubble Tension) and explaining the origins of the Milky Way’s magnetic field strength. In particular, the Hubble Tension where different measurement methods yield conflicting values of the expansion rate of the universe poses a foundational problem to our current model of cosmology. 

And yet, might there be one field to resolve these puzzles? Primordial magnetic fields (PMFs) are large-scale magnetic fields that are believed to originate from processes occurring in the Early Universe. In this talk, I explore how PMFs could help answer these questions. I will review the different ways in which they can be produced and how they take up various roles in the evolution of the universe.