Vacuum Cherenkov Radiation for Nonminimal Isotropic Lorentz Violation
High Energy Physics - Phenomenology
2026-03-09 v1 High Energy Physics - Theory
Abstract
In this work, we study the effects of vacuum Cherenkov radiation caused by nonminimal dimension-5 Lorentz-violating (LV) operators in the fermion sector. Explicitly, we focus on two independent isotropic pieces of each set of nonminimal coefficients. Under the assumption that vacuum Cherenkov radiation is an expected phenomenon, experimental data of ultra-high-energy cosmic rays (UHECRs) allow us to put stringent bounds on isotropic coefficients in quarks.
Keywords
Cite
@article{arxiv.2603.05679,
title = {Vacuum Cherenkov Radiation for Nonminimal Isotropic Lorentz Violation},
author = {Albert Yu. Petrov and Marco Schreck and Alexandre R. Vieira},
journal= {arXiv preprint arXiv:2603.05679},
year = {2026}
}
Comments
Proceedings of the Tenth Meeting on CPT and Lorentz Symmetry (CPT'25), Indiana University, Bloomington, May 15-19, 2025. 10 pages, 3 figures, and 1 table