Physics – Condensed Matter
Scientific paper
2003-05-30
Phys. Rev. A 68 (2003) 063608
Physics
Condensed Matter
5 pages, 4 figures
Scientific paper
10.1103/PhysRevA.68.063608
We consider a continuous atom laser propagating through a wave guide with a constriction. Two different types of transmitted stationary flow coexist. The first one coincides, at low incident current, with the non-interacting flow. As the incident flux increases, the repulsive interactions decrease the corresponding transmission coefficient. The second type only occurs for sufficiently large incident currents and has a solitonic structure. Remarkably, for any chemical potential there always exists a value of the incident flux at which the solitonic flow is perfectly transmitted.
Leboeuf Patricio
Pavloff Nicolas
Sinha Subhasis
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