Analogy between thermal emission of nano objects and Hawking's radiation

TL;DR

This paper explores analogies between black hole Hawking radiation and thermal emission from nano objects, revealing similar temperature-dependent behaviors and scattering regimes, with implications for understanding quantum effects in nanophotonics.

Contribution

It introduces a novel analogy between Hawking radiation and nano-object thermal emission, highlighting temperature thresholds and scattering phenomena.

Findings

Hawking-like temperature determines blackbody emission limits.

Nano object scattering regimes depend on a Hawking-like temperature.

Analogies provide insights into quantum effects in nanophotonics.

Abstract

We analyze in this work some analogies between thermal emission of nano objects and Hawking's radiation. We first focus on the famous expression of the black hole radiating temperature derived by Hawking in 1974 and consider the case of thermal emission of a small aperture made into a cavity (Ideal Blackbody). We show that an expression very similar to Hawking's temperature determines a temperature below which an aperture in a cavity cannot be considered as standard blackbody radiating like T^4. Hawking's radiation therefore appear as a radiation at a typical wavelength which is of the size of the horizon radius. In a second part, we make the analogy between the emission of particle-anti particle pairs near the black hole horizon and the scattering and coupling of thermally populated evanescent waves by a nano objects. We show here again that a temperature similar to the Hawking temperature determines the regimes where the scattering occur or where it is negligible.