Kerr Black Holes as Particle Accelerators to Arbitrarily High Energy

TL;DR

This paper demonstrates that Kerr black holes with dark matter spikes can theoretically accelerate particles to arbitrarily high energies, potentially allowing exploration of Planck-scale physics despite redshift effects.

Contribution

It introduces the idea that intermediate mass Kerr black holes with dark matter spikes can serve as natural particle accelerators reaching arbitrarily high energies.

Findings

Black holes can act as high-energy particle accelerators.

Ejecta from collisions are highly redshifted.

Potential to probe Planck-scale physics.

Abstract

We show that intermediate mass black holes conjectured to be the early precursors of supermassive black holes and surrounded by relic cold dark matter density spikes can act as particle accelerators with collisions, in principle, at arbitrarily high centre of mass energies in the case of Kerr black holes. While the ejecta from such interactions will be highly redshifted, we may anticipate the possibility of a unique probe of Planck-scale physics.