Statistical Description of Rotating Kaluza-Klein Black Holes

Details Statistical Description of Rotating Kaluza-Klein Black Holes Statistical Description of Rotating Kaluza-Klein Black Holes

2007-01-16

arxiv.org/abs/hep-th/0701150v2

Phys.Rev.D75:084006,2007

Physics

High Energy Physics

High Energy Physics - Theory

25 pages. v2: minor correction + ref added

Scientific paper

10.1103/PhysRevD.75.084006

We extend the recent microscopic analysis of extremal dyonic Kaluza-Klein (D0-D6) black holes to cover the regime of fast rotation in addition to slow rotation. Fastly rotating black holes, in contrast to slow ones, have non-zero angular velocity and possess ergospheres, so they are more similar to the Kerr black hole. The D-brane model reproduces their entropy exactly, but the mass gets renormalized from weak to strong coupling, in agreement with recent macroscopic analyses of rotating attractors. We discuss how the existence of the ergosphere and superradiance manifest themselves within the microscopic model. In addition, we show in full generality how Myers-Perry black holes are obtained as a limit of Kaluza-Klein black holes, and discuss the slow and fast rotation regimes and superradiance in this context.

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