Hairy black holes and the endpoint of AdS4 charged superradiance
Hairy black holes and the endpoint of AdS4 charged superradiance
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DOI：
10.1007/jhep02(2017)128
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发表时间：
2016-10
影响因子：
5.4
通讯作者：
Ó. J. Dias;Ramon Masachs
中科院分区：
文献类型：
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作者：
Ó. J. Dias;Ramon Masachs
我们构建了在超辐射开始时与反德西特（AdS 4） Reissner-Nordström黑洞合并的毛状黑洞解。对于给定的质量和电荷，这些毛茸茸的黑洞比相应的AdS 4-Reissner-Nordström黑洞具有更高的熵。因此，它们是带电超辐射不稳定性终点的自然候选者。另一方面，毛茸茸的黑洞从来没有主宰过正则和大正则系综。毛状黑洞的零视界半径是一个孤子（即在规范变换下的玻色子星）。对于小质量和小电荷，我们用摄动的方法构造了我们的解，以便用毛状黑洞的性质来证明和与初值模拟的端点进行比较。我们进一步讨论了在全局AdS 4-Reissner-Nordström黑洞中也存在的近视界标量凝聚不稳定性。我们强调了近视界和超辐射不稳定性的不同性质，并且由于AdS的非线性不稳定性，毛状黑洞最终存在。
We construct hairy black hole solutions that merge with the anti-de Sitter (AdS 4) Reissner-Nordström black hole at the onset of superradiance. These hairy black holes have, for a given mass and charge, higher entropy than the corresponding AdS 4-Reissner-Nordström black hole. Therefore, they are natural candidates for the endpoint of the charged superradiant instability. On the other hand, hairy black holes never dominate the canonical and grand-canonical ensembles. The zero-horizon radius of the hairy black holes is a soliton (ie a boson star under a gauge transformation). We construct our solutions perturbatively, for small mass and charge, so that the properties of hairy black holes can be used to testify and compare with the endpoint of initial value simulations. We further discuss the near-horizon scalar condensation instability which is also present in global AdS 4-Reissner-Nordström black holes. We highlight the different nature of the near-horizon and superradiant instabilities and that hairy black holes ultimately exist because of the non-linear instability of AdS.