Taming the dark photon production via a non-minimal coupling to gravity
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.
Fields of Study & Subjects
Cosmology and Gravitation Theories
Dark Matter and Cosmic Phenomena
Pulsars and Gravitational Waves Research
Publication details
- Journal / source
- Physics Letters B
- Publisher
- Elsevier BV
- Volume
- 873
- Pages
- 140222–140222
- Publication date
- 29 January 2026
- Language
- EN