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

2025/09/15 by Lebedev, Oleg, Yoon, Jong-Hyun
#Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/arxiv.2509.12309

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.

Citations

• Gravitational production of massive vectors non-minimally coupled to gravity
• Vector dark matter, inflation and non-minimal couplings with gravity
• hep-th

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