Work

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

Year: 2026

Type: article

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.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2026.140222

Authors: Oleg Lebedev, Jong-Hyun Yoon

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Research Foundation of Korea, Ministry of Science and ICT, South Korea, National Supercomputing Center, Korea Institute of Science and Technology Information

Awards: G4319288215, G7452925216, G804908983

OpenAlex ID: W7126072049

FWCI: 6.313

Cites: 14

Cited by: 2

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