2008

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

Frolov, Valeri P., Kubiznak, David

Understand

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.

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