How do axisymmetric black holes grow monopole and dipole hair?
How do axisymmetric black holes grow monopole and dipole hair?
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DOI：
10.1103/physrevd.107.104047
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发表时间：
2022-12
影响因子：
5
通讯作者：
Abhishek Hegade K. R.-Abhishek-Hegade-K. R.-2133943042;E. Most;J. Noronha;Helvi Witek;N. Yunes
中科院分区：
文献类型：
--
作者：
Abhishek Hegade K. R.-Abhishek-Hegade-K. R.-2133943042;E. Most;J. Noronha;Helvi Witek;N. Yunes
本文研究了标量Gauss-Bonnet理论和动力学Chern-Simons理论中标量偶极子和偶极毛的动力学形成。我们证明了偶极毛的球对称模完全由时空质量与偶极毛值的乘积决定。然后，我们表明，偶极头发的$\ell=1$模式的动力学是密切相关的事件视界的外观在轴对称崩溃，这将导致在辐射的某些模式，可能已经分散在未来的崩溃。我们证实了这些分析预测通过模拟的引力坍缩的快速旋转的中子星星在退耦极限，无论是在标量高斯-邦纳和动力学陈-西蒙斯理论。本文的结果与文献[1]的结果相结合。引用{R：2022 cwe}，提供了这些理论中轴对称和球形引力坍缩中标量辐射和偶极辐射动力学的清晰物理图像。
We study the dynamical formation of scalar monopole and dipole hair in scalar Gauss-Bonnet theory and dynamical Chern-Simons theory. We prove that the spherically-symmetric mode of the dipole hair is completely determined by the product of the mass of the spacetime and the value of the monopole hair. We then show that the dynamics of the $\ell=1$ mode of the dipole hair is intimately tied to the appearance of the event horizon during axisymmetric collapse, which results in the radiation of certain modes that could have been divergent in the future of the collapse. We confirm these analytical predictions by simulating the gravitational collapse of a rapidly rotating neutron star in the decoupling limit, both in scalar Gauss-Bonnet and dynamical Chern-Simons theory. Our results, combined with those of Ref.~\cite{R:2022cwe}, provide a clear physical picture of the dynamics of scalar monopole and dipole radiation in axisymmetric and spherical gravitational collapse in these theories.