Magnetic field production after inflation

TL;DR

This paper investigates the generation of electromagnetic fields during the preheating phase after hybrid inflation, highlighting the onset of kinetic turbulence and self-similar energy spectra in a Standard Model-like setup.

Contribution

It demonstrates the emergence of kinetic turbulence and self-similar energy spectra in electromagnetic field production post-inflation within a Standard Model framework.

Findings

Kinetic turbulence develops soon after symmetry breaking.

Energy spectra exhibit self-similar behavior.

Power-law dependence observed in field variances.

Abstract

We study the electromagnetic field production during preheating after hybrid inflation in a model with the field content of the Standard Model, coupled to a singlet inflaton. We find that very soon after symmetry breaking our system enters a regime of kinetic turbulence, characterized by a self-similar behaviour of the energy spectra and a power-like dependence on time of the inflaton and Higgs field variances.