Photonic black resonators and photon stars in AdS5
Photonic black resonators and photon stars in AdS5
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DOI：
10.1088/1361-6382/ab7418
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发表时间：
2019-10
影响因子：
3.5
通讯作者：
T. Ishii;Keiju Murata
中科院分区：
文献类型：
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作者：
T. Ishii;Keiju Murata
快速旋转的Myers-Perry-AdS 5黑洞在麦克斯韦场的旋转超辐射作用下是不稳定的.从不稳定性的开始，时间周期中性黑洞的解决方案配备了一个非平凡的电磁波，我们称之为光子黑共振器。在无地平线的极限下，它们归结为几何解，可以称为光子星。具体地说，我们引入了一个cohomogeneity-1的度量和麦克斯韦场和构造这样的解决方案与等距群。我们计算热力学量并得到相图。事实证明，光子黑共振器的熵比MAdS 5黑洞高，而它的熵也比没有麦克斯韦场的黑共振器小。这表明了麦克斯韦超辐射不稳定性与等距的非线性动力学的预期。
Rapidly rotating Myers–Perry-AdS5 (MPAdS5) black holes are shown to be unstable against rotational superradiance of a Maxwell field. From the onset of the instability, time-periodic neutral black hole solutions equipped with a nontrivial electromagnetic wave are obtained, which we call photonic black resonators. In the horizonless limit, they reduce to geon solutions which may be called photon stars. Specifically, we introduce a cohomogeneity-1 ansatz for the metric and Maxwell field and construct such solutions with an isometry group. We compute thermodynamic quantities and obtain phase diagrams. It turns out that a photonic black resonator has a higher entropy than a MPAdS5 black hole, while it also has a smaller entropy than a black resonator without the Maxwell field. This suggests what is expected for nonlinear dynamics following the Maxwell superradiant instability with the isometry.