Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/11328
Title: Effects of localized impurity on a dark soliton in a bose-einstein condensate with an external magnetic trap
Authors: Li, H
Wang, DN 
Keywords: Bose-Einstein condensate
Dark soliton
Impurity
The variational approach
Issue Date: 2009
Publisher: Chinese Physical Society
Source: Chinese physics B, 2009, v. 18, no. 7, p. 2659-2666 How to cite?
Journal: Chinese physics B 
Abstract: The dynamics of a dark soliton has been investigated in a Bose-Einstein condensate with an external magnetic trap, and the effects of localized impurity on the dynamics are discussed by the variational approach based on the renormalized integrals of motion. The reciprocal movement of the dark soliton is discussed by performing a standard linear analysis, and it is found that the effects of the localized impurity depend strictly on the positive or negative value of the impurity strength corresponding to the repulsive or attractive impurity. The numerical results confirm the theoretical analysis, and show that the effects also depend on the effective nonlinear coefficient and the harmonic frequency.
URI: http://hdl.handle.net/10397/11328
ISSN: 1674-1056
DOI: 10.1088/1674-1056/18/7/007
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