Effect of interaction strength on gap solitons of Bose-Einstein condensates in optical lattices

• 来源期刊: 中国物理B（英文版）
• 关键词: Bose-Einstein condensates solitons optical lattices
• 年，卷（期）: 2008,（4）
• 页码范围: 1189-1195
• 页数: 7页
• 语种: 英文

摘要

We have developed a systematic analytical approach to the study on the dynamic properties of the linear and the nonlinear excitations for quasi-one-dimensional Bose-Einstein condensate trapped in optical lattices. A novel linear dispersion relation and an algebraic soliton solution of the condensate are derived analytically under consideration of Bose-Einstein condensate with a periodic potential. By analysing the soliton solution, we find that the interatomic interaction strength has an important effect on soliton dynamic properties of Bose-Einstein condensate.