玻色-爱因斯坦凝聚中的混沌反控制  

Anti-control of chaos in Bose-Einstein condensate

作　　者：王志霞[1,2] 张喜和[1] 沈柯[1] 

机构地区：[1]长春理工大学物理系,长春130022 [2]空军航空大学基础部,长春130022

出　　处：《物理学报》2008年第12期7586-7590,共5页Acta Physica Sinica

摘　　要：提出一种实现玻色-爱因斯坦凝聚中的混沌反控制方法——周期信号驱动法.数值模拟结果表明,用小的周期信号控制系统,采用恰当的调制相位和强度,只要满足系统的最大Lyapunov指数大于零即可实现不同的混沌轨道重构.调制相位在混沌轨道重构中起了很重要的作用.We present a method of anti-control of chaos in Bose-Einstein condensate by applying periodic signals to convert the periodic state into chaotic state. Numerical simulation shows that there are different chaotic orbits corresponding to different modulation intensity and modulating frequency only if the maximum Lyapunov exponent of the system is positive. The phase difference between the two sinusoidal forces added to the Gross-Pitaevski equation plays an important role in anti-control of chaos.

关 键 词：玻色-爱因斯坦凝聚 混沌反控制 小周期信号 LYAPUNOV指数 

分 类 号：O415.5[理学—理论物理]