论文标题
Reissner-NordströmDeSitter不稳定的起源
The origin of the Reissner-Nordström de Sitter instability
论文作者
论文摘要
我们提供了有力的数值证据，证明存在不稳定的六维Reissner-nordströmde Sitter（RNDS）黑洞。这种不稳定性类似于在七个时空及以上的RNDS黑洞中存在的Konoplya-Zhidenko不稳定性。此外，我们对极端RNDS黑洞的近摩尼子极限进行了详细的分析，并发现不稳定的引力模式有效地表现为一个巨大的标量领域，其质量违反了ADS $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ _2 $ d \ d \ d \ egeq 6 $），从而为现有的论证提供了一个现有的论证。最后，我们表明，RND的扰动的频谱具有出色的复杂结构，具有几个分叉/合并，似乎是RNDS黑洞独有的
We give strong numerical evidence for the existence of an instability afflicting six-dimensional Reissner-Nordström de Sitter (RNdS) black holes. This instability is akin of the Konoplya-Zhidenko instability present in RNdS black holes in seven spacetime dimensions and above. Moreover, we perform a detailed analysis of the near-horizon limit of extremal RNdS black holes, and find that unstable gravitational modes effectively behave as a massive scalar field whose mass violates the AdS$_2$ Breitenlöhner-Freedman bound (if and only if $d\geq 6$), 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
