The BTZ black hole exhibits anti-Hawking phenomena

TL;DR

This paper demonstrates that detectors outside a BTZ black hole can experience anti-Hawking phenomena, where increasing acceleration leads to decreased particle detection, analogous to anti-Unruh effects.

Contribution

It introduces the concept of anti-Hawking phenomena as black hole analogues of anti-Unruh effects, expanding understanding of quantum effects near black holes.

Findings

Detectors outside BTZ black holes show decreased particle detection with increased acceleration.

Anti-Hawking phenomena are analogous to anti-Unruh effects in black hole settings.

The study provides new insights into quantum field behavior near black holes.

Abstract

The Unruh effect is a surprising prediction of quantum field theory that asserts accelerating observers perceive a thermal spectrum of particles with a temperature proportional to their acceleration. However, it has recently been shown that particle detectors can click less often or even cool down as their acceleration increases, in contrast to the heating one would expect. This leads to the so called anti-Unruh phenomena. Here we consider detectors outside a BTZ black hole and demonstrate the existence of black hole analogues of these effects, which we dub anti-Hawking phenomena.