Primordial magnetic fields from second-order cosmological perturbations: tight coupling approximation
Primordial magnetic fields from second-order cosmological perturbations: tight coupling approximation
We explore the possibility of generating large-scale magnetic fields from second-order cosmological perturbations during the pre-recombination era. The key process for this is Thomson scattering between the photons and the charged particles within the cosmic plasma. To tame the multi-component interacting fluid system, we employ the tight coupling approximation. It …