受驱双势阱中玻色-爱因斯坦凝聚的动力学行为  

Dynamics of Bose-Einstein Condensates in a Driven Double-well

作　　者：李淑灵[1] 杨世平[1] 徐琳[1] 何晓燕[1] 

机构地区：[1]河北师范大学物理科学与信息工程学院,河北石家庄050016

出　　处：《河北师范大学学报（自然科学版）》2008年第4期461-464,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金(A2006000128)

摘　　要：研究了受驱双势阱中玻色-爱因斯坦凝聚的动力学行为.受驱外力为一单色正弦波,随着驱动强度、频率的不同,受驱双势阱中经典粒子的运动可以是周期的也可以是混沌的,还可以两者共存.描述凝聚体的方程采用Gross-Pitaevskii方程,首先利用单个阱凝聚波函数展开,推导出了受驱双势阱GP方程的经典方程,研究了其相空间的动力学行为和自俘获现象的产生.The dynamic of Bose-Einstein condensates in a double-well under a monochromatic external driving force is studied. With the different driving intensity and frequency, the motion of the classical particle can be either regular or chaotic or even both of them. The equation that describes the Bose-Einstein condensates is Gross-Pitaevskii equation. Firstly, the study gets the Gross-Pitaevskii equation＇s classical form by a superposition of the single well wave function, then, studies the dynamics of their phase space and the self-trapping behavior of Bose-Einstein condensate under periodic driving force.

关 键 词：玻色-爱因斯坦凝聚 受驱双势阱 动力学行为 

分 类 号：O415[理学—理论物理]