The universe is magnetized on all scales probed so far. On the largest scales, galaxies and
galaxy clusters host magnetic fields at the micro Gauss level coherent on scales up to ten …

We review the possible mechanisms for the generation of cosmological magnetic fields,
discuss their evolution in an expanding Universe filled with the cosmic plasma and provide a …

A bstract Massive spinning particles acquire helicity-dependent chemical potentials during
the inflation from axion-type couplings. Such spinning fields can mediate sizable inflaton …

We study the explosive production of gauge fields during axion inflation in a novel gradient
expansion formalism that describes the time evolution of a set of bilinear electromagnetic …

We study gravitational wave production from gauge preheating in a variety of inflationary
models, detailing its dependence on both the energy scale and the shape of the potential …

We review current ideas on the origin of galactic and extragalactic magnetic fields. We begin
by summarizing observations of magnetic fields at cosmological redshifts and on …

Because the inflationary mechanism is extremely sensitive to UV-physics, the construction of
theoretically robust models of inflation provides a unique window on Planck scale physics …

When inflation is driven by a pseudoscalar field χ coupled to vectors as α 4 χ FF˜, this
coupling may lead to a copious production of gauge quanta, which in turns induces non …

Current bounds from the polarization of the CMB predict the scale-invariant gravitational
wave (GW) background of inflation to be out of reach for upcoming GW interferometers. This …

In this work we compute the production of magnetic fields in models of axion inflation
coupled to the hypercharge sector of the Standard Model through a Chern-Simons …