偶极-偶极相互作用下双势阱中旋量玻色-爱因斯坦凝聚磁化率的非线性动力学性质  

Nonlinear dynamical properties of susceptibility of a spinor Bose-Einstein condensate with dipole-dipole in teractionin a double-well potential

作　　者：臧小飞[1] 李菊萍[1] 谭磊[1] 

机构地区：[1]兰州大学理论物理研究所,兰州730000

出　　处：《物理学报》2007年第8期4348-4352,共5页Acta Physica Sinica

基　　金：兰州大学理论物理与数学纯基础科学基金(批准号:LZU05001);甘肃省自然科学基金(批准号:3ZS061-A25-035)资助的课题.~~

摘　　要：利用平均场理论和单空间模近似,研究了偶极-偶极相互作用下双势阱中总自旋F=1的旋量玻色-爱因斯坦凝聚磁化率的非线性动力学性质.在给定的初态条件下,研究结果表明:当λA+2λd=0时,凝聚体只表现为磁化振荡行为;当λA+2λd≠0时,凝聚体既存在磁化振荡行为,又存在磁自陷俘现象.Based on mean-field theory and single spatial mode approximation, we study the nonlinear dynamical properties of the susceptibility of total spin F = 1 Bose-Einstein condensate with dipole-dipole interaction in a double-well potential. For certain initial states, we find that the susceptibility oscillation appears when λA＋ 2λd= 0. When λA＋2λd≠0, the dynamical behavior of the system shows both oscillation and self-trapping of susceptibility.

关 键 词：玻色-爱因斯坦凝聚 自旋 磁化率 

分 类 号：O431.2[机械工程—光学工程]