Gradient expansion formalism for a generic model of inflationary magnetogenesis

Abstract We study the generation of electromagnetic fields during inflation in a model with kinetic and axial couplings to the inflaton field using the gradient expansion formalism. This formalism allows us to simultaneously take into account the possible presence of two nonlinear phenomena: (i) the...

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Bibliographic Details
Main Author: A. V. Lysenko
Format: Article
Language:English
Published: SpringerOpen 2025-05-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-025-14269-9
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