The theory of inflation with single and multiple fields is reviewed paying particular attention
to the dynamics of adiabatic and entropy/isocurvature perturbations which provide the …

Reheating is an important part of inflationary cosmology. It describes the production of
Standard Model particles after the phase of accelerated expansion. We review the reheating …

Bringing together the key ideas from nonequilibrium statistical mechanics and powerful
methodology from quantum field theory, this 2008 book captures the essence of …

Reheating is a transition era after the end of inflation, during which the inflaton is converted
into the particles that populate the Universe at later times. No direct cosmological …

Magnetic fields appear everywhere in the universe. From stars and galaxies, all the way to
galaxy clusters and remote protogalactic clouds, magnetic fields of considerable strength …

We review spacetime dynamics in the presence of large-scale electromagnetic fields and
then consider the effects of the magnetic component on perturbations to a spatially …

We consider vacuum polarization from massless scalar electrodynamics in de Sitter inflation.
The theory exhibits a 3+ 1 dimensional analog of the Schwinger mechanism in which a …

We study the generation of magnetic fields during preheating within a scenario of hybrid
inflation at the electroweak scale. We find that the nonperturbative and strongly out-of …

Preheating describes the stage of rapidly depositing the energy of cosmological scalar field
into excitations of other light fields. This stage is characterized by exponential particle …

We analyze the generation of helical magnetic fields during preheating in a model of low-
scale electroweak (EW) hybrid inflation. We show how the inhomogeneities in the Higgs …