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Quasinormal modes of black holes in anti-de Sitter space: a numerical study of the eikonal limit

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arxiv 0906.0064 v2 pith:AFALEQRW submitted 2009-05-30 hep-th

Jaqueline Morgan , Vitor Cardoso , Alex S. Miranda , C. Molina , Vilson T. Zanchin This is my paper · ORCID
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keywords blackmodeseikonalgravitationalanti-deholeslimitperturbations
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Using series solutions and time-domain evolutions, we probe the eikonal limit of the gravitational and scalar-field quasinormal modes of large black holes and black branes in anti-de Sitter backgrounds. These results are particularly relevant for the AdS/CFT correspondence, since the eikonal regime is characterized by the existence of long-lived modes which (presumably) dominate the decay timescale of the perturbations. We confirm all the main qualitative features of these slowly-damped modes as predicted by Festuccia and Liu (arXiv:0811.1033) for the scalar-field (tensor-type gravitational) fluctuations. However, quantitatively we find dimensional-dependent correction factors. We also investigate the dependence of the QNM frequencies on the horizon radius of the black hole (brane) and the angular momentum (wavenumber) of vector- and scalar-type gravitational perturbations.

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  1. Geodesic dynamics in brane-de Sitter wormholes

    gr-qc 2025-04 conditional novelty 5.0 of 10

    For an asymptotically de Sitter brane wormhole, the throat is shown to be an unstable fixed point and photon sphere, with a claimed Bogdanov-Takens bifurcation for radial null geodesics.

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