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arXiv 0802.0322hep-thgr-qc
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高维黑洞:隐藏的对称性和变量分离

Higher-Dimensional Black Holes: Hidden Symmetries and Separation of Variables

Valeri P. Frolov, David Kubiznak

摘要:

本文讨论旋转黑洞时空中的隐对称性。我们开始一个扩展的介绍,主要是总结结果在四维隐藏的对称性,并介绍了杀人和杀人矢野张量,对象负责隐藏的对称性。我们还演示了如何在四维平坦时空中从一个主CKY张量(即一个封闭的非退化共形Killing-Yano 2-形式)开始,可以“生成”四维Kerr-NUT-(A)dS解及其隐藏的对称性。在此之后,我们考虑高维Kerr-NUT-(A)dS度量,并证明他们拥有一个主CKY张量,允许一个生成整个塔的Killing-Yano和Killing张量。这些对称性意味着测地线方程的完全可积性和一般Kerr-NUT-(A)dS度量中Hamilton-Jacobi、Klein-Gordon和Dirac方程的完全分离变量。

英文摘要:

In this paper, we discuss hidden symmetries in rotating black hole spacetimes. We start with an extended introduction which mainly summarizes results on hidden symmetries in four dimensions and introduces Killing and Killing-Yano tensors, objects responsible for hidden symmetries. We also demonstrate how starting with a principal CKY tensor (that is a closed non-degenerate conformal Killing-Yano 2-form) in 4D flat spacetime one can "generate" 4D Kerr-NUT-(A)dS solution and its hidden symmetries. After this we consider higher-dimensional Kerr-NUT-(A)dS metrics and demonstrate that they possess a principal CKY tensor which allows one to generate the whole tower of Killing-Yano and Killing tensors. These symmetries imply complete integrability of geodesic equations and complete separation of variables for the Hamilton-Jacobi, Klein-Gordon, and Dirac equations in the general Kerr-NUT-(A)dS metrics.

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