物理学报2016，Vol.65Issue(11)：110502-1-110502-6,6.DOI:10.7498/aps.65.110502
玻色-爱因斯坦凝聚体中的双孤子相互作用操控∗
Controlling interactions b etween bright solitons in Bose-Einstein condensate
摘要
Abstract
Considering the periodically driving linear potential, we study the interactions between two solitons in Bose-Einstein condensate (BEC). By using Darboux transformation, the double bright soliton solution of Gross-Pitaevskii equation is obtained. Then we numerically calculate the properties of interaction between the two bright solitons in BEC, and obtain a critical value of the S-wave scattering length (SL). It is shown that, when the SL is more than the critical value, the attractive interaction and the atom transfer between two bright solitons can be observed. While the SL is less than the critical value, two bright solitons can keep stable and localized. Furthermore, the stable periodic oscillations of two solitons can be observed by slowly changing the potential. These results will be conducive to the BEC soliton experiments.关键词
玻色-爱因斯坦凝聚/孤子/S-波散射长度Key words
Bose-Einstein condensates/bright solitons/S-wave scattering length引用本文复制引用
何章明,张志强..玻色-爱因斯坦凝聚体中的双孤子相互作用操控∗[J].物理学报,2016,65(11):110502-1-110502-6,6.基金项目
国家自然科学基金(批准号:11447223,11505054)、湖南省教育厅一般项目(批准号:14C0348)、理论物理国家重点实验室开放课题(批准号：Y4KF211CJ1)和河南省教育厅科学技术研究重点项目(批准号:14B140014)资助的课题.@@@@* Project supported by the National Nature Science Foundation of China (Grant Nos.11447223,11505054), the Research Foundation of Education Bureau of Hunan Province of China (Grant No.14C0348), the Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences (Grant No. Y4KF211CJ1), and the Research Foundation of Education Bureau of Henan Province of China (Grant No.14B140014) （批准号:11447223,11505054）
