Quasinormal modes of the electrically charged dilaton black hole

TL;DR

This paper calculates the quasinormal mode frequencies of electrically charged dilaton black holes, showing they are similar to Reissner-Nordstrom black holes during early evaporation and weakly depend on dilaton coupling.

Contribution

It provides the first detailed calculation of quasinormal frequencies for dilaton black holes, highlighting their similarity to known solutions and the weak influence of dilaton coupling.

Findings

Quasinormal frequencies are similar to Reissner-Nordstrom black holes for Q < 0.7-0.8M.

The spectrum weakly depends on the dilaton coupling.

Early evaporation phase shows negligible differences from standard charged black holes.

Abstract

We sketch the results of calculations of the quasinormal frequencies of the electrically charged dilaton black hole. At the earlier phase of evaporation (Q is less than 0.7-0.8M), the dilaton black hole "rings" with the complex frequencies which differ negligibly from those of the Reissner-Nordstrom black hole. The spectrum of the frequencies weakly depends upon the dilaton coupling.