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arXiv · 2503.19679

How to obtain slow roll inflation driven by non-linear electrodynamics

Daniele Malafarina·Hrishikesh Chakrabarty·Ilia Musco
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Abstract

We establish for the first time the conditions that must be imposed on the action for a magnetic universe in a theory of non-linear electrodynamics in order to have an asymptotically de Sitter initial state followed by a slow roll inflationary phase. We show that models so far proposed in the literature do not allow for a prolonged inflationary phase consistent with observations. We construct a Lagrangian that reduces to the Maxwell one in weak field; this is the only class of models that satisfies the required conditions for slow roll in the early Universe.

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Daniele Malafarina, Hrishikesh Chakrabarty, Ilia Musco. 2025-03-25. How to obtain slow roll inflation driven by non-linear electrodynamics. https://doi.org/10.1103/3rvf-8t9z

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