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arXiv 2104.10686hep-thastro-ph.HEgr-qchep-ph
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黑洞的引力足迹及其微观几何

Gravitational Footprints of Black Holes and Their Microstate Geometries

Ibrahima Bah, Iosif Bena, Pierre Heidmann, Yixuan Li, Daniel R. Mayerson

摘要:

我们在四维空间中构造了一族非超对称极值黑洞和它们的无视界微态几何。黑洞可以有有限的角动量和任意的荷质比,不像它们的超对称表兄弟。这些特征使它们和它们的微观几何形状与天体物理学相关。因此,他们提供了有趣的原型,研究偏离克尔解决方案所造成的新的视界尺度物理。在本文中,我们计算了这些解决方案的引力多极结构,并比较他们的克尔黑洞。黑洞的多极子与克尔的多极子有很大的不同,因为它们与荷质比有着重要的关系。无水平微观状态几何形状与相应的黑洞具有相同的多极,只有微小的偏差由其微观结构的规模决定。

英文摘要:

We construct a family of non-supersymmetric extremal black holes and their horizonless microstate geometries in four dimensions. The black holes can have finite angular momentum and an arbitrary charge-to-mass ratio, unlike their supersymmetric cousins. These features make them and their microstate geometries astrophysically relevant. Thus, they provide interesting prototypes to study deviations from Kerr solutions caused by new horizon-scale physics. In this paper, we compute the gravitational multipole structure of these solutions and compare them to Kerr black holes. The multipoles of the black hole differ significantly from Kerr as they depend non-trivially on the charge-to-mass ratio. The horizonless microstate geometries have the same multipoles as their corresponding black hole, with small deviations set by the scale of their microstructure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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