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Origin of the Reissner-Nordstr?m–de Sitter instability

机译:reissner-nordstr的起源?m-de sitter不稳定

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We give strong numerical evidence for the existence of an instability afflicting six-dimensional Reissner-Nordstr?m de Sitter (RNdS) black holes. This instability is akin of the Konoplya-Zhidenko instability present in RNdS black holes in seven spacetime dimensions and above. Moreover, we perform a detailed analysis of the near-horizon limit of extremal RNdS black holes, and find that, typically, unstable gravitational modes effectively behave as a massive scalar field whose mass violates the AdS 2 Breitenl?hner-Freedman bound (if and only if d ≥ 6 ), thus providing a physical argument for the existence of the instability. Finally, we show that the frequency spectrum of perturbations of RNdS has a remarkable intricate structure with several bifurcations/mergers that appears unique to RNdS black holes.
机译:我们提供了强大的数值证据,以存在不稳定的六维Reissner-nordstr?M de Sitter(RNDS)黑洞。 这种不稳定是在七个空间尺寸和上方的RNDS黑洞中存在的konoplya-zhidenko不稳定性。 此外,我们对极端RNDS黑洞的近地平极限进行了详细的分析,并且发现,通常,不稳定的重力模式有效地表现为质量违反广告2 Breitenl?HNER-Freedman约束(如果和 仅在d≥6),因此为存在不稳定提供物理参数。 最后,我们表明RNDS的扰动频谱具有显着的复杂结构,其中几个分叉/合并对于RNDS黑洞似乎是独一无二的。

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