High Energy Effects on D-Brane and Black Hole Emission Rates

TL;DR

This paper investigates how high-energy effects alter scalar particle emission from near-extremal five-dimensional black holes and D-branes, revealing modifications in emission spectra that align between gravity and string theory descriptions.

Contribution

It demonstrates the high-energy modifications to emission rates and greybody factors, extending the analysis to charged scalars and four-dimensional cases, enhancing understanding of black hole-D-brane correspondence.

Findings

Emission rates match in high-energy regimes

Greybody factors are modified at high energies

Results extend to charged scalars and four dimensions

Abstract

We study the emission of scalar particles from a class of near-extremal five dimensional black holes and the corresponding D-brane configuration at high energies. We show that the distribution functions and the black hole greybody factors are modified in the high energy tail of the Hawking spectrum in such way that the emission rates exactly match. We extend the results to charged scalar emission and to four dimensions.