Black Hole Radiation in the Brane World and Recoil Effect

TL;DR

This paper models black hole recoil in brane worlds, showing how black holes can leave the brane due to quantum effects, potentially affecting collider experiments and energy conservation observations.

Contribution

It introduces a particle-like model for small black holes in higher dimensions and calculates the probability of black hole recoil leaving the brane.

Findings

Recoil probability depends on specific coupling constants.

Black holes can escape the brane, terminating thermal emission.

Energy non-conservation could be observable in collider experiments.

Abstract

A black hole attached to a brane in a higher dimensional space emitting quanta into the bulk may leave the brane as a result of a recoil. We study this effect. We consider black holes which have a size much smaller than the characteristic size of extra dimensions. Such a black hole can be effectively described as a massive particle with internal degrees of freedom. We consider an interaction of such particles with a scalar massless field and prove that for a special choice of the coupling constant describing the transition of the particle to a state with smaller mass the probability of massless quanta emission takes the form identical to the probability of the black hole emission. Using this model we calculate the probability for a black hole to leave the brane and study its properties. The discussed recoil effect implies that black holes which might be created by interaction of high energy particles in colliders the thermal emission of the formed black hole could be terminated and the energy non-conservation can be observed in the brane experiments.