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arXiv · 0802.3824

A new result on the Klein-Gordon equation in the background of a rotating black hole

Horst R. Beyer
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Abstract

This short paper should serve as basis for further analysis of a previously found new symmetry of the solutions of the wave equation in the gravitational field of a Kerr black hole. Its main new result is the proof of essential self-adjointness of the spatial part of a reduced normalized wave operator of the Kerr metric in a weighted L^2-space. As a consequence, it leads to a purely operator theoretic proof of the well-posedness of the initial value problem of the reduced Klein-Gordon equation in that field in that L^2-space and in this way generalizes a corresponding result of Kay (1985) in the case of the Schwarzschild black hole. It is believed that the employed methods are applicable to other separable wave equations.

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Horst R. Beyer. 2008-02-26. A new result on the Klein-Gordon equation in the background of a rotating black hole. https://doi.org/10.1063/1.3037327

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