Vacuum Cherenkov Radiation for Nonminimal Isotropic Lorentz Violation
Albert Yu. Petrov, Marco Schreck, and Alexandre R. Vieira
TL;DR
This paper investigates how nonminimal isotropic Lorentz-violating operators affect vacuum Cherenkov radiation, using cosmic ray data to set bounds on Lorentz violation parameters in the fermion sector.
Contribution
It provides the first constraints on isotropic nonminimal dimension-5 Lorentz-violating coefficients from vacuum Cherenkov radiation observations.
Findings
Stringent bounds on isotropic Lorentz-violating coefficients in quarks.
Demonstrates vacuum Cherenkov radiation as a tool to test Lorentz violation.
Highlights the relevance of ultra-high-energy cosmic rays in probing fundamental physics.
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.
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Taxonomy
TopicsNoncommutative and Quantum Gravity Theories · Advanced Operator Algebra Research · International Science and Diplomacy