Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2004-12-29
Physics
Condensed Matter
Other Condensed Matter
4 pages, 2 figures, 1 table
Scientific paper
Two-component mixtures of Bose-Einstein condensates are shown to support solitary wave complexes that move with a constant velocity preserving their form. I obtain the families of such solitary wave complexes in two-dimensional two-component mixture condensates. These solutions are classified according to the structure of the wavefunction in each component. I show that these complexes nucleate from the surface of the disk when it moves supercritically, therefore, suggesting a mechanism by which these waves can be obtained in condensates by a moving laser beam. The condition for such a nucleation is derived analytically. The flow for supercritical disk velocities is computed numerically. The process of a boundary layer separation with emission of either vortex pairs in each component or a vortex pair in one component and a ``slaved wave'' in the other component is elucidated.
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