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arXiv 1209.2867gr-qchep-th
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荷电Lovelock黑洞的不稳定性:矢量扰动和标量扰动

Instability of Charged Lovelock Black Holes: Vector Perturbations and Scalar Perturbations

Tomohiro Takahashi

摘要:

研究了荷电Lovelock黑洞解在矢量型和标量型扰动下的稳定性。我们找到合适的主变量的稳定性分析,这些变量的方程是薛定谔型方程的两个组件和这些薛定谔算子是对称的。利用这些主方程,我们证明了带电Lovelock黑洞在矢量型扰动下是稳定的.对于标量型扰动,我们显示的不稳定性的标准,并检查这些数字。在我们以前的文章中,我们证明了近极值黑洞在张量型扰动下具有不稳定性。本文发现,即使质量相对较大,小荷黑洞在标量型扰动下也具有不稳定性。

英文摘要:

We examine the stability of charged Lovelock black hole solutions under vector type and scalar type perturbations. We find the suitable master variables for the stability analysis; the equations for these variables are the Schrodinger type equations with two components and these Schrodinger operators are symmetric. By these master equations, we show that charged Lovelock Black holes are stable under vector type perturbations. For scalar type perturbations, we show the criteria for the instability and check these numerically. In our previous paper, we have shown that nearly extremal black holes have the instability under tensor type perturbations. In this paper, we find that black holes with small charge have the instability under scalar type perturbations even if they have relatively large mass.

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