Greybody Factors for Brane Scalar Fields in a Rotating Black-Hole Background

Abstract

We study the evaporation of (4+n)-dimensional rotating black holes into scalar degrees of freedom on the brane. We calculate the corresponding absorption probabilities and cross-sections obtaining analytic solutions in the low-energy regime, and compare the derived analytic expressions to numerical results, with very good agreement. We then consider the high-energy regime, construct an analytic high-energy solution to the scalar-field equation by employing a new method, and calculate the absorption probability and cross-section for this energy regime, finding again a very good agreement with the exact numerical results. We also determine the high-energy asymptotic value of the total cross-section, and compare it to the analytic results derived from the application of the geometrical optics limit.

Latex file, 30 pages, 5 figures, typos corrected, version published in Phys. Rev. D

Cited by in corpus (7)

• BlackMax: A black-hole event generator with rotation, recoil, split branes and brane tension
• Scalar Emission in the Bulk in a Rotating Black Hole Background
• Greybody factors in a rotating black-hole background-II : fermions and gauge bosons
• Hawking radiation in a Rotating Kaluza-Klein Black Hole with Squashed Horizons
• Greybody Factors for Rotating Black Holes on Codimension-2 Branes
• Bulk dominated fermion emission on a Schwarzschild background
• Bulk scalar emission from a rotating black hole pierced by a tense brane