arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.11138hep-thgr-qc
收藏

极带电黑洞与超辐射不稳定准正规模

Extremal Charged Black Holes and Superradiantly Unstable Quasinormal Modes

Zhan-Feng Mai, Run-Qiu Yang, H. Lü

摘要:

最近的研究表明,极端带电黑洞在STU超引力中存在超辐射不稳定性,这是由于与带电质量标量场相关的不稳定(低频)准束缚态的存在。在本文中,我们数值计算表明,对于某些电荷配置,这些黑洞也可以激发(高频)超辐射不稳定的准正规模。我们发现,经验的不稳定模式密切相关,有一个火山形的有效势的薛定谔波方程。

英文摘要:

It was recently shown that the extremal charged black holes in STU supergravity suffer from superradiant instability owing to the existence of the unstable (low-frequency) quasibound states associated with a charged massive scalar field. In this paper, we show numerically that for some charge configurations, these black holes can also excite the (higher-frequency) superradiantly unstable quasinormal modes. We find empirically that the unstable modes are closely related to having a volcano-shaped effective potential in the Schrödinger-like wave equation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑