Area spectrum of near-extremal SdS black holes via the new interpretation of quasinormal modes

Wenbo Li, Lixin Xu, Jianbo Lu
2009 Physics Letters B  
Motivated by the recent work about a new physical interpretation of quasinormal modes by Maggiore, we investigate the quantization of near-extremal Schwarzschild-de Sitter black holes in the four dimensional spacetime. Following Kunstatter's method, we derive the area and entropy spectrum of near-extremal Schwarzschild-de Sitter black holes which differs from Setare's result. Furthermore, we find that the derived a universal area spectrum is $2\pi n$ which is equally spaced.
doi:10.1016/j.physletb.2009.04.084 fatcat:r6xwdmen4rgb3lelxscs5dx2tu