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Quasi-normal modes of charged, dilaton black holes
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In this paper we study the perturbations of the charged, dilaton black hole, described by the solution of the low energy limit of the superstring action found by Garfinkle, Horowitz and Strominger. We compute the complex frequencies of the quasi-normal modes of this black hole, and compare the results with those obtained for a Reissner-Nordstr\"{o}m and a Schwarzschild black hole. The most remarkable feature which emerges from this study is that the presence of the dilaton breaks the \emph{isospectrality} of axial and polar perturbations, which characterizes both Schwarzschild and Reissner-Nordstr\"{o}m black holes.
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Cited by 3 Pith papers
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Polar perturbations of dilaton-Euler-Heisenberg black holes
Every computed fundamental quasinormal frequency for polar metric-dilaton perturbations of dilaton-Euler-Heisenberg black holes has a negative imaginary part, meaning the modes are damped, with ε=+1 and ε=−1 differing...
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The shadow and quasinormal modes of the asymptotically flat hairy black holes with a dilaton potential
For exact asymptotically flat hairy charged black holes with a dilaton potential, the shadow radius, photon-orbit Lyapunov exponent, and scalar quasinormal frequencies are computed, showing strong coupling dependence ...
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Thermal Stability and QNMs of a Hairy Black Hole in the Presence of a Monopole Field
Generalized GHS-GM black hole with dilaton and monopole shows thermal stability increasing as scalar charge decreases and QNMs damping as black hole charge increases.
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