Vortices in Black Holes,Physical Review Letters

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Vortices in Black Holes
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-08-03 , DOI: 10.1103/physrevlett.129.061302
Gia Dvali _{1,

2} , Florian Kühnel ₁ , Michael Zantedeschi _{1,

2}

Affiliation

We argue that black holes admit vortex structure. This is based both on a graviton-condensate description of a black hole as well as on a correspondence between black holes and generic objects with maximal entropy compatible with unitarity, so-called saturons. We show that due to vorticity, a

Q

-ball-type saturon of a calculable renormalizable theory obeys the same extremality bound on the spin as the black hole. Correspondingly, a black hole with extremal spin emerges as a graviton condensate with vorticity. This offers a topological explanation for the stability of extremal black holes against Hawking evaporation. Next, we show that in the presence of mobile charges, the global vortex traps a magnetic flux of the gauge field. This can have macroscopically observable consequences. For instance, the most powerful jets observed in active galactic nuclei can potentially be accounted for. As a signature, such emissions can occur even without a magnetized accretion disk surrounding the black hole. The flux entrapment can provide an observational window to various hidden sectors, such as millicharged dark matter.

中文翻译：

黑洞中的漩涡

我们认为黑洞承认涡旋结构。这既基于对黑洞的引力子凝聚描述，也基于黑洞与具有与单一性兼容的最大熵的通用物体（所谓的 saturons）之间的对应关系。我们证明，由于涡度，

问

可计算的可重整化理论的球型 saturon 遵循与黑洞相同的自旋极值界限。相应地，具有极端自旋的黑洞以具有涡度的引力子凝聚体的形式出现。这为极端黑洞对抗霍金蒸发的稳定性提供了拓扑解释。接下来，我们展示了在存在移动电荷的情况下，全局涡旋会捕获规范场的磁通量。这可能会产生宏观上可观察到的后果。例如，在活动星系核中观察到的最强大的喷流可能会被解释。作为一个标志，即使没有围绕黑洞的磁化吸积盘，这种发射也可能发生。通量捕获可以为各种隐藏区域提供观察窗口，例如带电暗物质。

更新日期：2022-08-03

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