The magnetic field is ubiquitous in the universe. Though it plays an essential role in various
astrophysical phenomena, its real origin and evolution are poorly known. This article …

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 …

The most studied mechanism of inflationary magnetogenesis relies on the time-dependence
of the coefficient of the gauge kinetic term F μν F μν. Unfortunately, only extremely finely …

In this work, we study general features of a regime where gauge fields produced during
inflation cause a strong backreaction on the background evolution and its impact on the …

A bstract We investigate pair creation by an electric field in four-dimensional de Sitter space.
The expectation value of the induced current is computed, using the method of adiabatic …

The coupling of an axion-like particle driving inflation to the Standard Model particle content
through a Chern-Simons term generically sources a dual production of massless helical …

There has been a growing evidence for the existence of magnetic fields in the extra-galactic
regions, while the attempt to associate their origin with the inflationary epoch alone has …

We study magnetogenesis in axionlike inflation driven by a pseudoscalar field ϕ coupled
axially to the electromagnetic (EM) field (β/M p) ϕ F μ ν F˜ μ ν with dimensionless coupling …

In all inflationary scenarios of primordial black hole (PBH) formation, amplified scalar
perturbations inevitably accompany an induced stochastic gravitational wave background …

Distant BL Lacertae objects emit γ-rays that interact with the extragalactic background light
(EBL), creating electron–positron pairs, and reducing the flux measured by ground-based …