Phase diagrams of 2D and 3D disordered Bose gases in the local density approximation

Abstract

We study the superfluid transitions in bidimensional (2D) and tridimensional (3D) disordered and interacting Bose gases. We work in the limit of long-range correlated disorder such that it can be treated in the local density approximation. We present the superfluid transition curves both in the disorder-temperature plane well as in the disorder-entropy plane in 2D and 3D Bose gases. Surprisingly, we find that a small amount of disorder is always favorable to the apparition of a superfluid. Our results offer a quantitative comparison with recent experiments in 2D disordered ultra-cold gases, for which no exact theory exists.

LCF-OA

References in corpus (3)

• Strongly interacting bosons in a disordered optical lattice
• Bose-Einstein-condensed systems in random potentials
• Smoothing effect and delocalization of interacting Bose-Einstein condensates in random potentials

Cited by in corpus (2)

• Dynamical emergence of a Kosterlitz-Thouless transition in a disordered Bose gas following a quench
• Localization landscape for interacting Bose gases in one-dimensional speckle potentials