Scalar Emission in the Bulk in a Rotating Black Hole Background

Details Scalar Emission in the Bulk in a Rotating Black Hole Background Scalar Emission in the Bulk in a Rotating Black Hole Background

2007-09-03

arxiv.org/abs/0709.0241v2

Phys.Lett.B656:102-111,2007

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, Latex file, 5 figures, references added

Scientific paper

10.1016/j.physletb.2007.09.050

We study the emission of scalars into the bulk from a higher-dimensional rotating black hole. We obtain an analytic solution to the field equation by employing matching techniques on expressions valid in the near-horizon and far-field regimes. Both analytic and numerical results for the absorption probability, in the low-energy and low-angular momentum limit, are derived and found to be in excellent agreement. We also compute the energy emission rate, and show that the brane-to-bulk ratio of the energy emission rates for scalar fields remains always larger than unity in the aforementioned regime.

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