Scalar field evolution in Gauss-Bonnet black holes
Abstract
We present thorough analysis of scalar perturbations in the background of Gauss-Bonnet, Gauss-Bonnet-de Sitter and Gauss-Bonnet-anti-de Sitter black hole spacetimes. The perturbations are considered both in frequency and time domain. The scalar field evolution is crucially dependent on the values of the cosmological constant and the Gauss-Bonnet coupling. For Gauss-Bonnet and Gauss-Bonnet-de Sitter black holes, at asymptotically late times either power-law or exponential tails are dominating, while for Gauss-Bonnet-anti-de Sitter black hole, the quasinormal modes govegovern the scalar field decay at all times. For the limit of near extremal value of the (positive) cosmological constant and purrn the scalar field decay at all times. For the limit of near extremal value of the (positive) cosmological constant and pure de Sitter and anti-de Sitter modes in Gauss-Bonnet gravity we have found analytical expressions.Keywords
All Related Versions
This publication has 0 references indexed in Scilit: