Scalar Perturbations of Charged Dilaton Black Holes
Sharmanthie Fernando, Keith Arnold
TL;DR
This paper investigates scalar perturbations of charged dilaton black holes in 3+1 dimensions, analyzing quasinormal modes and their dependence on dilaton coupling and temperature.
Contribution
It provides the first detailed calculation of quasinormal modes for charged dilaton black holes using third order WKB method, highlighting the influence of dilaton coupling.
Findings
Dilaton coupling significantly affects quasinormal mode frequencies.
A linear relation exists between quasinormal modes and temperature for large black holes.
Quasinormal modes are computed for the first time in this context.
Abstract
We have studied the scalar perturbation of static charged dilaton black holes in 3+1 dimensions. The black hole considered here is a solution to the low-energy string theory in 3+1 dimensions. The quasinormal modes for the scalar perturbations are calculated using the third order WKB method. The dilaton coupling constant has a considerable effect on the values of quasi normal modes. It is also observed that there is a linear relation between the quasi normal modes and the temperature for large black holes.
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