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
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
关键词 ：
03.75.Fi ,
03.65.Ge ,
42.65.Tg
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.
Key words ：
03.75.Fi
03.65.Ge
42.65.Tg
出版日期: 2002-01-01
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2002, Vol. 19 
