Super-Penrose process and rotating wormholes

TL;DR

This paper investigates how rotating wormholes can facilitate the super-Penrose process, where particle collisions near the throat lead to unbounded energy extraction, contingent on the presence of an ergoregion.

Contribution

It demonstrates that rotating wormholes with ergoregions can enable unbounded energy growth through particle collisions, extending the understanding of energy extraction mechanisms.

Findings

Unbounded energy growth possible near rotating wormholes

Ergoregion presence is essential for the super-Penrose process

Collision dynamics depend on the wormhole's rotation and lapse function

Abstract

We consider collision of particles in a wormhole near its throat. Particles come from the opposite mouths. If the lapse function is small enough there, the energy $E$ of debris at infinity grows unbounded, so we are faced with the so-called super-Penrose process. This requires the existence of the ergoregion, so a wormhole should be rotating.