一维含时Gross-Pitaevskii方程下三个玻色-爱因斯坦凝聚体间的干涉

计算物理 ›› 2011, Vol. 28 ›› Issue (3): 463-468.

一维含时Gross-Pitaevskii方程下三个玻色-爱因斯坦凝聚体间的干涉

车立新¹, 罗香怡¹, 苏明辉²

1. 白城师范学院物理系, 吉林白城 137000;
2. 白城师范学院图书馆, 吉林白城 137000

收稿日期:2010-05-11 修回日期:2010-10-08 出版日期:2011-05-25 发布日期:2011-05-25
通讯作者: 罗香怡,E-mail:louxylgq@yahoo.com.cn
作者简介:车立新(1962-),female,professor.Engaged in the study of physics calcuation,

Interference of Three Bose-Einstein Condensates in One-dimensional Time-dependent Gross-Pitaevskii Equation

CHE Lixin¹, LUO Xiangyi¹, SU Minghui²

1. Physics Department, Baicheng Normal College, Baicheng 137000, China;
2. Library, Baicheng Normal College, Baicheng 137000, China

Received:2010-05-11 Revised:2010-10-08 Online:2011-05-25 Published:2011-05-25

摘要/Abstract

摘要： 从理论上应用辛算法数值求解一维含时GP方程,研究存在陷浮势和陷浮势为零时三个玻色-爱因斯坦凝聚体间的干涉.当陷浮势存在时,玻色-爱因斯坦凝聚体间发生弹性碰撞;如果在t=0时陷浮势为零,三个凝聚体间发生干涉现象,并且发现几率密度随着时间的演化是振荡的.

关键词: 玻色-爱因斯坦凝聚, GP方程, 干涉

Abstract: Symplectic method is applied to solve 1D time-dependent Gross-Pitaevskii(GP) equation numerically.Interference of three Bose-Einstein condensates(BECs) is investigated with or without a trapping potential.Elastic collisions of BECs occur as trapping potential exists.If trapping potential is zero at t=0,interference of three BECs is observed and oscillation of probability density is found.

Key words: Bose-Einstein condensate, Gross-Pitaevskii equation, interference

中图分类号:

O562

车立新, 罗香怡, 苏明辉. 一维含时Gross-Pitaevskii方程下三个玻色-爱因斯坦凝聚体间的干涉[J]. 计算物理, 2011, 28(3): 463-468.

CHE Lixin, LUO Xiangyi, SU Minghui. Interference of Three Bose-Einstein Condensates in One-dimensional Time-dependent Gross-Pitaevskii Equation[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2011, 28(3): 463-468.

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