Year: 2026
Type: article
Abstract: Lorentz symmetry may be violated at the Planck scale. In the bumblebee model, a vector field acquires a nonzero vacuum expectation value, spontaneously breaking Lorentz symmetry. We study quasinormal modes of a charged spherically symmetric black hole in this framework, focusing on the coupled gravito-electromagnetic perturbations induced by nonminimal coupling. Using the continued fraction and asymptotic iteration methods, we find that the Lorentz-violating parameter shifts the real frequencies of gravitationally-dominated and electromagnetically-dominated modes in opposite directions. The results reveal mixed excitation channels that are absent in the standard Reissner–Nordström limit, offering potential targets for future gravitational-wave ringdown observations.
Source: The European Physical Journal C
Authors: Bo-Rui Li, Jia-Zhou Liu, Wen-Di Guo, Yu-Xiao Liu
Institution: Lanzhou University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4416620217