Work

Spectra for reactions in astrophysical electromagnetic cascades with Lorentz invariance violation: The vacuum Cherenkov effect

Year: 2025

Type: article

Abstract: Lorentz invariance violation is a feature of several quantum gravity models in which Lorentz symmetry is broken at high energies, leading to potential changes in particle behavior and interactions. In this study, we investigate vacuum Cherenkov radiation, a reaction in which an electron spontaneously emits a photon. This process, forbidden when considering unbroken Lorentz symmetry, is a phenomenological consequence of some quantum gravity models. We derive, for the first time, the spectra for the vacuum Cherenkov reaction, and confirm our results numerically. These results can be used to derive limits on Lorentz invariance violation.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/physrevd.111.083001

Authors: Andrey Saveliev, Rafael Alves Batista, Feodor Mishin

Institutions: Immanuel Kant Baltic Federal University, Lomonosov Moscow State University, Institut d'Astrophysique de Paris, Sorbonne Université

Language: English

Topic: Noncommutative and Quantum Gravity Theories

Subfield: Statistical and Nonlinear Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Russian Science Foundation

Awards: G3663405584, G4531867344, G5847502361, G6141822678, G7080048889