Local Approach to Hawking Radiation

TL;DR

This paper introduces a local method to derive Hawking radiation that does not depend on asymptotic spacetime properties, revealing thermal particle emission across various horizon types.

Contribution

It presents a novel local approach to Hawking radiation applicable to diverse spacetime horizons, independent of specific metric configurations.

Findings

Particle emission occurs at a wide class of horizons.

The emitted radiation has a thermal energy distribution.

The method is free of asymptotic metric assumptions.

Abstract

We consider an approach to the Hawking effect which is free of the asymptotic behavior of the metric or matter fields, and which is not confined to one specific metric configuration. As a result, we find that for a wide class of spacetime horizons there exists an emission of particles out of the horizon. As expected, the energy distribution of the radiating particles turns out to be thermal.