Spatial structure of a Bose-Einstein condensate in a combined trap

作     者：Fei Li Zhijian He Wenwu Li Fei Li;Zhijian He;Wenwu Li

作者机构：Department of PhysicsHunan First Normal UniversityChangsha 410205China Department of ScienceHunan First Normal UniversityChangsha 410205China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2023年第75卷第3期

页      面：105-113页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：Projects supported by the Natural Science Foundation of Hunan Province(2016JJ6020) the Scientific Research Fund of Hunan Provincial Education Department(18A436) the Scientific Research Fund of Hunan First normal University(XYS13N16) 

主　　题：Bose-Einstein condensates atomic current spatial structure chaos 

摘      要：We study the spatial structure of a Bose-Einstein condensate(BEC)with a space-dependent s-wave scattering length in a combined *** exists a space-dependent nonlinear atomic current in the *** atomic current has an important influence on the spatial structure of the *** findings reveal that a large chemical potential can effectively suppress the chaotic spatial structure in the BEC *** to the large chemical potential,a strong atomic current is necessary to make the system lose its periodic spatial structure and lead the system into a chaotic spatial *** when the atomic current intensity exceeds a critical value,the chaotic spatial structure of the BEC will be completely eliminated and the system will always be kept in a series of single-periodic states as the atomic current becomes *** a very weak atomic current,the spatial structure of the BEC is very sensitive to the intensity of the atomic current and a very small change of the intensity can dramatically change the spatial structure of the *** effects of the combined trap parameters on the spatial structure of BECs are also discussed.