Superfluidity versus Anderson localization in a dilute Bose gas

Abstract

We consider the motion of a quasi one dimensional beam of Bose-Einstein condensed particles in a disordered region of finite extent. Interaction effects lead to the appearance of two distinct regions of stationary flow. One is subsonic and corresponds to superfluid motion. The other one is supersonic, dissipative and shows Anderson localization. We compute analytically the interaction-dependent localization length. We also explain the disappearance of the supersonic stationary flow for large disordered samples.

4 pages, 3 figures, final published version

References in corpus (3)

• Localization of Matter Waves in 2D-Disordered Optical Potentials
• Three-dimensional strong localization of matter waves by scattering from atoms in a lattice with a confinement-induced resonance
• Transporting, splitting and merging of atomic ensembles in a chip trap

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