Evolution of primordial magnetic fields during large-scale structure formation

Understand

Primordial magnetic fields could explain the large-scale magnetic fields present in the Universe.

• Inflation and phase transitions in the early Universe could give rise to such fields with unique characteristics.
• We investigate the magneto-hydrodynamic evolution of these magnetogenesis scenarios with cosmological simulations.
• We evolve inflation-generated magnetic fields either as (i) uniform (homogeneous) or as (ii) scale-invariant stochastic fields, and phase transition-generated ones either as (iii) helical or as (iv) non-helical fields from the radiation-dominated epoch.