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arXiv · 2509.12309

Taming the dark photon production via a non-minimal coupling to gravity

Oleg Lebedev·Jong-Hyun Yoon
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Abstract

Inflationary production of massive dark photons with non-minimal couplings to gravity shows surprising growth at large momenta. These couplings appear in the effective low energy description of a more fundamental theory. We find that the growth is absent in explicit gauge invariant UV-complete models. Such completions are also free of "ghost" instabilities, which often appear in the effective models.

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Oleg Lebedev, Jong-Hyun Yoon. 2025-09-15. Taming the dark photon production via a non-minimal coupling to gravity. https://arxiv.org/abs/2509.12309

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