Comparison of particle properties in Kerr metric and in rotating coordinates

TL;DR

This paper compares particle behaviors in Kerr black hole spacetime and rotating Minkowski coordinates, revealing similar phenomena like negative energy particles and the Penrose process outside the ergosphere.

Contribution

It demonstrates that negative and zero energy particles and processes like Penrose can occur in rotating Minkowski space, paralleling Kerr black hole properties.

Findings

Negative energy particles exist outside the ergosphere in Minkowski space.

The Penrose process has analogs in rotating Minkowski coordinates.

Similarities and differences between Kerr and rotating Minkowski scenarios are analyzed.

Abstract

Properties of particles in Kerr metric are compared with properties of particles in rotating coordinates in Minkowski space-time. It is shown that particles with negative and zero energies existing in the ergosphere of the rotating black hole also exist in the region out of the static limit in rotating coordinates in Minkowski space-time. Some similarities like the Penrose process and differences in both cases are analyzed.