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Quasi-normal modes of Schwarzschild-de Sitter black holes

A. Zhidenko
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Abstract

The low-laying frequencies of characteristic quasi-normal modes (QNM) of Schwarzschild-de Sitter (SdS) black holes have been calculated for fields of different spin using the 6th-order WKB approximation and the approximation by the Pöshl-Teller potential. The well-known asymptotic formula for large $l$ is generalized here on a case of the Schwarzchild-de Sitter black hole. In the limit of the near extreme $Λ$ term the results given by both methods are in a very good agreement, and in this limit fields of different spin decay with the same rate.

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A. Zhidenko. 2020-03-06. Quasi-normal modes of Schwarzschild-de Sitter black holes. https://doi.org/10.1088/0264-9381%2F21%2F1%2F019

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