Speaker
Description
Primordial magnetic fields (PMFs) are a unique probe of the early Universe and a source of relic gravitational waves. In this talk, I will present recent advances in our understanding of PMFs, focusing on three interconnected topics. First, I will discuss the evolution of PMFs within the framework of chiral magnetohydrodynamics (MHD), highlighting the emergence of mean-field dynamos. Second, I will examine current observational constraints on PMFs in cosmic voids, and explore the potential contamination from galactic dipole fields that may affect the interpretation of lower bounds. Finally, I will present new models for the late-time evolution of PMFs during cosmic structure formation, with implications for both theory and observation. These insights help clarify how cosmic magnetism may leave detectable imprints in upcoming gravitational wave observations.
