Bogolon-mediated electromagnetic wave absorption in multicomponent Bose-Einstein condensates

TL;DR

This paper develops a microscopic theory for electromagnetic wave absorption in two-component Bose-Einstein condensates, revealing how absorption can be manipulated by tuning condensate parameters across different dimensions.

Contribution

It introduces a novel microscopic model for bogolon-mediated absorption in multicomponent BECs, addressing the limitations of simple models by including additional degrees of freedom.

Findings

Absorption rate depends on condensate parameters.

Manipulation of absorption properties is possible.

Dimensionality affects absorption behavior.

Abstract

We investigate the electromagnetic wave absorption process in a coherently coupled two-component Bose-Einstein condensate model in different dimensionality at zero temperature. As the analogue of phonon in the solid state physics, the elementary excitation of the Bose-Einstein condensate is described by Bogoliubov quasiparticle or bogolon for short. Due to the small magnitude of the sound velocity of the bogolon, the absorption process is prohibited by the conservation of energy and momentum. To surmount this depression, the additional degree of freedom must be considered inside of the simple Bose gas model. In this article, we develop a microscopical theory for electromagnetic wave absorption by a two-component Bose-Einstein condensate and investigate the absorption rate dependence in different dimensions. Our calculation shows the possibility of manipulating the absorption property by tuning the parameters of the condensates.