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Dark Lump Excitations in Bose-Einstein Condensates |
HUANG Guo-Xiang;ZHU Shan-Hua |
Key Laboratory for Optical and Magnetic Resonance Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062
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Cite this article: |
HUANG Guo-Xiang, ZHU Shan-Hua 2002 Chin. Phys. Lett. 19 17-19 |
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Abstract We investigated the dynamics of two-dimensional matter-wave pulses in a Bose-Einstein condensate with disk-shaped traps. For the case of repulsive atom-atom interactions, a Kadomtsev-Petviashvili equation with positive dispersion is derived using the method of multiple scales. The results show that it is possible to excite dark lump-like two-dimensional nonlinear excitations in the Bose-Einstein condensate.
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Keywords:
03.75.Fi
03.65.Ge
42.65.Tg
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Published: 01 January 2002
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