Lieb Mode in a Quasi-One-Dimensional Bose-Einstein Condensate of Atoms
- 30 July 2002
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 89 (7) , 070403
- https://doi.org/10.1103/physrevlett.89.070403
Abstract
We calculate the dispersion relation associated with a solitary wave in a quasi-one-dimensional Bose-Einstein condensate of atoms confined in a harmonic, cylindrical trap in the limit of weak and strong interactions. In both cases, the dispersion relation is linear for long-wavelength excitations and terminates at the point where the group velocity vanishes. We also calculate the dispersion relation of sound waves in both limits of weak and strong coupling.Keywords
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