Bose--Einstein solitons in highly asymmetric traps

Abstract

We obtain analytic solutions to the Gross-Pitaevskii equation with negative scattering length in highly asymmetric traps. We find that in these traps the Bose--Einstein condensates behave like quasiparticles and do not expand when the trapping in one direction is eliminated. The results can be applicable to the control of the motion of Bose--Einstein condensates.

12 pages, Latex, Figures available under request on [email protected]

References in corpus (4)

• Finite temperature excitations of a trapped Bose gas
• A particle-number-conserving Bogoliubov method which demonstrates the validity of the time-dependent Gross-Pitaevskii equation for a highly condensed Bose gas
• Stability and collective excitations of a two-component Bose-condensed gas: a moment approach
• Bose-Einstein Condensation in a Trap: the Case of a Dense Condensate

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