We study the amplification of large-scale magnetic fields during preheating and inflation in
several different models. Preheating can resonantly amplify seed fields on cosmological …

A large-scale cosmic magnetic field affects not only the growth of density perturbations, but
also rotational instabilities and anisotropic deformation in the density distribution. We give a …

We analyze the possibility of primordial magnetic field amplification by a stochastic large
scale kinematic dynamo during reheating. We consider a charged scalar field minimally …