Superfluidity versus Anderson localization in a dilute Bose gas

Paul, T. and Schlagheck, Peter and Leboeuf, P. and Pavloff, N. (2007) Superfluidity versus Anderson localization in a dilute Bose gas. Physical Review Letters 98, p. 210602.

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Other URL: http://publish.aps.org/abstract/prl/v98/p210602

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.

Item Type:Article
Institutions: Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Klaus Richter
Identification Number:
ValueType
cond-mat/0702591arXiv ID
Subjects:500 Science > 530 Physics
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Owner:Timo Hartmann
Deposited On:15 Nov 2007
Last Modified:16 Nov 2009 14:20
Item ID:2572
Owner Only: item control page