Perturbations and absorption cross section of infinite-radius black rings

被引：10

作者：

Cardoso, V ^{[1
]}

Dias, OJC

Yoshida, S

机构：

[1] Washington Univ, Dept Phys, McDonnell Ctr Space Sci, St Louis, MO 63130 USA

[2] Univ Waterloo, Dept Phys, Waterloo, ON N2L 3G1, Canada

[3] Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada

来源：

PHYSICAL REVIEW D | 2005年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevD.72.024025

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：1 / 16

页数：16

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