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Perturbations and absorption cross section of infinite-radius black rings

Perturbations and absorption cross section of infinite-radius black rings
Perturbations and absorption cross section of infinite-radius black rings
We study scalar field perturbations on the background of nonsupersymmetric black rings and of supersymmetric black rings. In the infinite-radius limit of these geometries, we are able to separate the wave equation, and to study wave phenomena in its vicinities. In this limit, we show that (i) the nonsupersymmetric case is stable against scalar field perturbations, (ii) the low energy absorption cross section for scalar fields is equal to the area of the event horizon in the supersymmetric case, and proportional to it in the nonsupersymmetric situation.
Cardoso, Vitor
08c1bdef-b56a-4067-ab37-89a9ece74fb7
Dias, Oscar J.C.
f01a8d9b-9597-4c32-9226-53a6e5500a54
Yoshida, Shijun
7671361b-0f79-4404-b1f3-537b855e4f22
Cardoso, Vitor
08c1bdef-b56a-4067-ab37-89a9ece74fb7
Dias, Oscar J.C.
f01a8d9b-9597-4c32-9226-53a6e5500a54
Yoshida, Shijun
7671361b-0f79-4404-b1f3-537b855e4f22

Cardoso, Vitor, Dias, Oscar J.C. and Yoshida, Shijun (2005) Perturbations and absorption cross section of infinite-radius black rings. Phys.Rev.D, 72 (2), [024025]. (doi:10.1103/PhysRevD.72.024025).

Record type: Article

Abstract

We study scalar field perturbations on the background of nonsupersymmetric black rings and of supersymmetric black rings. In the infinite-radius limit of these geometries, we are able to separate the wave equation, and to study wave phenomena in its vicinities. In this limit, we show that (i) the nonsupersymmetric case is stable against scalar field perturbations, (ii) the low energy absorption cross section for scalar fields is equal to the area of the event horizon in the supersymmetric case, and proportional to it in the nonsupersymmetric situation.

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Published date: 15 July 2005
Additional Information: ©2005 American Physical Society
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Identifiers

Local EPrints ID: 468103
URI: http://eprints.soton.ac.uk/id/eprint/468103
DOI: doi:10.1103/PhysRevD.72.024025
PURE UUID: 999eabe4-a773-47bd-a1e1-39a9a7132f81
ORCID for Oscar J.C. Dias: ORCID iD orcid.org/0000-0003-4855-4750

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Date deposited: 02 Aug 2022 17:05
Last modified: 17 Mar 2024 03:35

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Contributors

Author: Vitor Cardoso
Author: Oscar J.C. Dias ORCID iD
Author: Shijun Yoshida

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