Stimulated emission and Hawking radiation in black hole analogues

TL;DR

This paper explores stimulated emission and Hawking radiation in black hole analogues, analyzing quantum states and laser-stimulated emission, especially in electromagnetic fields within dielectric black holes.

Contribution

It provides a detailed analysis of stimulated Hawking radiation considering both particle number states and coherent states, including electromagnetic field cases.

Findings

Stimulated emission can enhance Hawking radiation in black hole analogues.

Coherent initial states significantly affect emission characteristics.

Electromagnetic fields exhibit stimulated radiation in dielectric black hole models.

Abstract

Stimulated emission by black holes is discussed in light of the analogue gravity program. We first consider initial quantum states containing a definite number of particles, and then we take into account the case where the initial state is a coherent state. The latter case is particularly significant in the case where Hawking radiation is studied in dielectric black holes, and the emission is stimulated by a laser probe. We are particularly interested in the case of the electromagnetic field, for which stimulated radiation is calculated too.