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arXiv · 2509.23732

Quasinormal modes of an electrically charged Kalb-Ramond black hole

Yun-Tao Gu·Wen-Di Guo·Yu-Xiao Liu
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Abstract

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 considerable attention. Recently, an electrically charged black hole solution within the Kalb-Ramond framework was proposed. In this study, we investigate the quasinormal modes of the resulting ``undecouplable'' system using both the matrix-valued continued fraction method and the matrix-valued direct integration method. Additionally, we develop a new approach to distinguish between different modes in such ``undecouplable'' systems. An error analysis is performed, and the influence of Lorentz violation on the fundamental quasinormal modes is systematically analyzed within a suitable parameter range.

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Yun-Tao Gu, Wen-Di Guo, Yu-Xiao Liu. 2025-09-28. Quasinormal modes of an electrically charged Kalb-Ramond black hole. https://arxiv.org/abs/2509.23732

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