One-dimensional Bose-Einstein condensation of photons in a microtube

TL;DR

This paper demonstrates the possibility of achieving one-dimensional Bose-Einstein condensation of photons in a microtube, analyzing the conditions and interactions necessary for this quantum state using advanced Green's functions techniques.

Contribution

It introduces a theoretical framework for photon BEC in a microtube, highlighting the role of photon-photon interactions and quasiequilibrium conditions.

Findings

Conditions for 1D photon BEC are identified.

Photon-photon interactions influence condensation.

Modified Green's functions formalism is applied.

Abstract

This paper introduces a quasiequilibrium one-dimensional Bose-Einstein condensation of photons trapped in a microtube. Light modes with a cut-off frequency (a photon's "mass") interact through different processes of absorption, emission, and scattering on molecules and atoms. In this paper, we study the conditions for the one-dimensional condensation of light and the role of photon-photon interactions in the system. The technique in use is the Matsubara's Green's functions formalism modified for the quasiequilibrium system under study.