Scalar perturbation around rotating Einstein-bumblebee BTZ black holes under Robin boundary conditions: Quasinormal modes and superradiance

IF 4.3 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics Letters B Pub Date : 2025-02-01 DOI:10.1016/j.physletb.2024.139228

Chengjia Chen , Fengkai Ge , Qiyuan Pan , Jiliang Jing

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引用次数: 0

Abstract

We investigate the scalar perturbation around a rotating Einstein-bumblebee BTZ black hole under Robin boundary conditions. It is shown that the relationship curves between real and imaginary parts of scalar quasinormal modes in the complex plane depend on the black hole spin parameter j and the Lorentz symmetry breaking parameter s. The shapes of these curves are similar for different s, but heavily depend on the spin parameter j. With the increase of j, the symmetry of these curves with respect to the imaginary axis in the complex plane is gradually broken for different s. We also discuss the energy and angular momentum fluxes across the black hole horizon under Robin boundary conditions, and probe the changes of the threshold parameter related to the superradiance in Robin boundary conditions with the symmetry breaking parameter and the spin parameter. The combination of the Lorentz symmetry violation and the Robin boundary condition provides richer physics in the scalar perturbation around a rotating Einstein-bumblebee BTZ black hole.

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罗宾边界条件下旋转爱因斯坦-大黄蜂BTZ黑洞周围的标量摄动：准正态模式和超辐射

研究了在Robin边界条件下旋转爱因斯坦-大黄蜂BTZ黑洞周围的标量微扰。结果表明，复平面标量拟正态模实部与虚部的关系曲线依赖于黑洞自旋参数j和洛伦兹对称破缺参数s，不同s下曲线形状相似，但严重依赖于自旋参数j。我们还讨论了Robin边界条件下黑洞视界上的能量通量和角动量通量，并利用对称性破缺参数和自旋参数探讨了Robin边界条件下与超辐射相关的阈值参数的变化。洛伦兹对称违反和罗宾边界条件的结合为围绕旋转的爱因斯坦-大黄蜂BTZ黑洞的标量扰动提供了更丰富的物理。

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来源期刊

Physics Letters B 物理-物理：综合

CiteScore

9.10

自引率

6.80%

发文量

647

审稿时长

3 months

期刊介绍： Physics Letters B ensures the rapid publication of important new results in particle physics, nuclear physics and cosmology. Specialized editors are responsible for contributions in experimental nuclear physics, theoretical nuclear physics, experimental high-energy physics, theoretical high-energy physics, and astrophysics.