Low Energy Dynamics of Near-Extremal Black Holes in N=2, d=4 Supergravity

Details Low Energy Dynamics of Near-Extremal Black Holes in N=2, d=4 Supergravity Low Energy Dynamics of Near-Extremal Black Holes in N=2, d=4 Supergravity

2011-12-20

arxiv.org/abs/1112.4683v2

Physics

High Energy Physics

High Energy Physics - Theory

20 pages

Scientific paper

We study the scattering and emission of probe particles from a near-extremal D0-D4 black hole in N=2, d=4 supergravity, when the parameters of the black hole solution lie within a certain regime. We first carry out a qualitative analysis of the probe potential to determine when quantum tunneling of particles from the black hole is possible. We then compute the absorption cross-section in the case of relatively high-energy scattering, when the energy of the emitted particle is close to the maximum value of the probe potential. Finally, we use the WKB approximation to compute the absorption cross-section and greybody factors for arbitrary energies for the scattered particle.

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