The possible existence of stable black holes with entropies larger than the corresponding Schwarzschild black hole has been discussed extensively. The recently proposed "rough" black holes provide a concrete example of this. The fear is that, in accordance with the Second Law of thermodynamics, the familiar smooth-skinned black holes might spontaneously "wrinklify" into such an object. We show that this fear is to some extent justified, in the sense that AdS black holes with more entropy than the AdS-Schwarzschild black hole of the same mass do exist.

中文翻译：

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事件视界皱纹化

熵大于相应施瓦西黑洞的稳定黑洞的可能存在已被广泛讨论。最近提出的“粗糙”黑洞提供了一个具体的例子。令人担心的是，根据热力学第二定律，熟悉的光滑皮肤黑洞可能会自发地“皱缩”成这样一个物体。我们表明这种恐惧在某种程度上是合理的，因为比相同质量的 AdS-Schwarzschild 黑洞具有更多熵的 AdS 黑洞确实存在。