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On the stability of the massive scalar field in Kerr space-time

MPG-Autoren

Beyer,  Horst Reinhard
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1105.4956
(Preprint), 246KB

JMP52_102502.pdf
(beliebiger Volltext), 833KB

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Zitation

Beyer, H. R. (2011). On the stability of the massive scalar field in Kerr space-time. Journal of Mathematical Physics, 52(10): 102502. doi:10.1063/1.3653840.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-03D9-0
Zusammenfassung
The current early stage in the investigation of the stability of the Kerr metric is characterized by the study of appropriate model problems. Particularly interesting is the problem of the stability of the solutions of the Klein-Gordon equation, describing the propagation of a scalar field in the background of a rotating (Kerr-) black hole. Results suggest that the stability of the field depends crucially on its mass $\mu$. Among others, the paper provides an improved bound for $\mu$ above which the solutions of the reduced, by separation in the azimuth angle in Boyer-Lindquist coordinates, Klein-Gordon equation are stable. Finally, it gives new formulations of the reduced equation, in particular, in form of a time-dependent wave equation that is governed by a family of unitarily equivalent positive self-adjoint operators. The latter formulation might turn out useful for further investigation. On the other hand, it is proved that from the abstract properties of this family alone it cannot be concluded that the corresponding solutions are stable.