2001/03/31 by P. Leboeuf, Nicolas Pavloff, N. Pavloff · 1 citation
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Strong Light-Matter Interactions #cond-mat
paper · pdf · doi:10.1103/physreva.64.033602
published as Phys. Rev. A 64, 033602 (2001) · 32 pages, 13 figures final version, typos corrected and better discussion of the boundary conditions
arxiv created 2001/07/18 · openalex publication_date 2001/08/03 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We compute the stationary profiles of a coherent beam of Bose-Einstein-condensed atoms propagating through a guide. Special emphasis is put on the effect of a disturbing obstacle present in the trajectory of the beam. The obstacle considered (such as a bend in the guide, or a laser field perpendicular to the beam) results in a repulsive or an attractive potential acting on the condensate. Different behaviors are observed when the beam velocity (with respect to the speed of sound), the size of the obstacle (relative to the healing length), and the intensity and sign of the potential are varied. The existence of bound states of the condensate is also considered.