Diffusion of cold atomic gases in the presence of an optical speckle potential

TL;DR

This paper investigates how cold atomic gases, both Fermi and Bose-Einstein condensates, diffuse in a random optical speckle potential, providing analytical and numerical insights into their spatial and temporal evolution.

Contribution

It offers new analytical and numerical analysis of atomic gas diffusion in speckle potentials, highlighting similarities between Fermi gases and Bose-Einstein condensates.

Findings

Analytical and numerical results for Fermi gas diffusion.

Discussion of Bose-Einstein condensate diffusion.

Comparison between Fermi and Bose gases in speckle potentials.

Abstract

We consider diffusion of a cold Fermi gas in the presence of a random optical speckle potential. The evolution of the initial atomic cloud in space and time is discussed. Analytical and numerical results are presented in various regimes. Diffusion of a Bose-Einstein condensate is also briefly discussed and similarity with the Fermi gas case is pointed out.