Breathing Bright Solitons in a Bose-Einstein Condensate
CHONG Gui-Shu, HAI Wen-Hua, XIE Qiong-Tao
Department of Physics, Hunan Normal University, Changsha 410081
Breathing Bright Solitons in a Bose-Einstein Condensate
CHONG Gui-Shu;HAI Wen-Hua;XIE Qiong-Tao
Department of Physics, Hunan Normal University, Changsha 410081
关键词 ：
03.75.Lm ,
03.75.Kk ,
05.45.Yv ,
32.80.Pj
Abstract ： A Bose-Einstein condensate with time varying scattering length in time-dependent harmonic trap is analytically investigated and soliton-like solutions of the Gross-Pitaeviskii equation are obtained to describe single soliton, bisoliton and N-soliton properties of the matter-wave. The influences of the geometrical property and modulate frequency of trapping potential on soliton behaviour are discussed. When the trap potential has a very small trap aspect ratio or oscillates with a high frequency, the matter-wave preserves its shape nearly like a soliton train in propagation. While the breathing behaviour, which displays the periodic collapse and revival of the matter-wave, is found for a relatively large aspect ratio or slow varying potential. Meanwhile mass center of the matter-wave translates and/or oscillates for different trap aspect ratio and trap frequnces.
Key words ：
03.75.Lm
03.75.Kk
05.45.Yv
32.80.Pj
出版日期: 2003-12-01
:
03.75.Lm
(Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)
03.75.Kk
(Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)
05.45.Yv
(Solitons)
32.80.Pj
引用本文:
CHONG Gui-Shu;HAI Wen-Hua;XIE Qiong-Tao. Breathing Bright Solitons in a Bose-Einstein Condensate[J]. 中国物理快报, 2003, 20(12): 2098-2101.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2003/V20/I12/2098
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2003, Vol. 20 
