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Perturbations and quasi-normal modes of black holes in Einstein-Aether theory
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We develop a new method for calculation of quasi-normal modes of black holes, when the effective potential, which governs black hole perturbations, is known only numerically in some region near the black hole. This method can be applied to perturbations of a wide class of numerical black hole solutions. We apply it to the black holes in the Einstein-Aether theory, a theory where general relativity is coupled to a unit time-like vector field, in order to observe local Lorentz symmetry violation. We found that in the non-reduced Einstein-Aether theory, real oscillation frequency and damping rate of quasi-normal modes are larger than those of Schwarzschild black holes in the Einstein theory.
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Cited by 2 Pith papers
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Hawking Emission from Black Holes Evaporating toward Wormholes and the Accuracy of the WKB Approximation
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Correspondence between quasinormal modes and grey-body factors of spherically symmetric traversable wormholes
For three families of traversable wormholes, the authors verify that the WKB correspondence between quasinormal modes and grey-body factors, known for black holes, holds to second order beyond the eikonal limit.
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