7 papers
Gravitational-Bumblebee perturbations: Exact decoupling and isospectrality
Hui-Fa Liu, Wentao Liu, Yu-Xiao Liu +2
In this paper, we present the exact decoupling of the full metric and bumblebee field perturbations in a Schwarzschild-like background. The coupled system reduces to four decoupled…
Macroscopic Optical Nonreciprocity: A Black Hole as an Optical Diode
Wentao Liu, Di Wu, Xiongjun Fang +2
Optical reciprocity--the principle that light retraces the same path when source and detector are interchanged--is a foundational concept in geometric optics. In this Letter, we de…
Gravitational wave polarization modes and stability analysis in Weyl geometry gravity
Yu-Zhi Fan, Xiao-Bin Lai, Yu-Qi Dong +1
We investigate the gravitational wave polarization modes and stability in Weyl geometry gravity within a Minkowski background. Our results indicate that the tensor sector consists…
Quasinormal modes of thick branes in gravity
Yu-Peng E, Chun-Chun Zhu, Yu-Xiao Liu
We systematically investigate the quasinormal modes of thick branes in gravity by numerically solving the Schrödinger-like perturbation equation of gravitational perturbatio…
Quasinormal modes of an electrically charged Kalb-Ramond black hole
Yun-Tao Gu, Wen-Di Guo, Yu-Xiao Liu
Lorentz violation serves as a significant feature in many modified theories of gravity. In particular, spontaneous Lorentz violation induced by the Kalb-Ramond field has attracted…
Quasinormal modes of a charged spherically symmetric black hole in bumblebee gravity
Bo-Rui Li, Jia-Zhou Liu, Wen-Di Guo +1
Recently, exact charged spherically symmetric black hole solutions within the framework of bumblebee gravity have been obtained, where the Lorentz symmetry is spontaneously broken…