Hawking emission of gravitons in higher dimensions: non-rotating black holes

TL;DR

This paper calculates graviton emission from higher-dimensional non-rotating black holes, showing increased bulk emission with more dimensions, with implications for collider and cosmic ray black hole detection.

Contribution

It provides the first detailed computation of graviton absorption and emission in higher-dimensional black holes, extending previous models to include bulk graviton emission effects.

Findings

Graviton emission increases with higher spacetime dimensions.

Bulk graviton emission is significantly enhanced in higher dimensions.

Results have implications for detecting microscopic black holes in colliders and cosmic rays.

Abstract

We compute the absorption cross section and the total power carried by gravitons in the evaporation process of a higher-dimensional non-rotating black hole. These results are applied to a model of extra dimensions with standard model fields propagating on a brane. The emission of gravitons in the bulk is highly enhanced as the spacetime dimensionality increases. The implications for the detection of black holes in particle colliders and ultrahigh-energy cosmic ray air showers are briefly discussed.