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Speaker |
Houri, Tsuyoshi |
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Co-autors |
Takeshi Oota, Yukinori Yasui |
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Talk Title |
Closed conformal Killing-Yano tensor and uniqueness of generalized Kerr-NUT-de Sitter spacetime |
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Abstract |
The higher-dimensional Kerr-NUT-de Sitter spacetime describes the general rotating asymptotically de Sitter black hole with NUT parameters. It is known that such a spacetime possesses a rank-2 closed conformal Killing-Yano (CKY) tensor as a ghiddenh symmetry which provides the separation of variables for the geodesic equations and Klein-Gordon equations. We present a classification of higher-imensional spacetimes admitting a rank-2 closed CKY tensor. This provides a eneralization of the Kerr-NUT-de Sitter spacetime. In particular, we show that the Kerr-NUT-de Sitter spacetime is the only spacetime with a non-degenerate CKY tensor. |
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