Electromagnetic quasinormal modes of the nearly-extremal higher-dimensional Schwarzschild-de Sitter black hole
Grigoris Panotopoulos
TL;DR
This paper derives an analytical formula for the electromagnetic quasinormal modes of nearly-extremal higher-dimensional Schwarzschild-de Sitter black holes, verified by WKB approximation and compared with prior results.
Contribution
It provides the first analytical expression for these quasinormal modes in higher dimensions near extremality.
Findings
Analytical spectrum derived for nearly-extremal higher-dimensional black holes
Results verified using WKB approximation
Comparison with previous numerical results included
Abstract
We obtain an analytical expression for the electromagnetic quasinormal spectrum of the higher-dimensional nearly-extremal Schwarzschild-de Sitter black hole. The WKB method is used to verify the results, and a comparison with known results from previous works is briefly made as well.
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