摘要
本文采用辛算法数值求解一维含时Gross-Pitaevskii(GP)方程.研究了存在陷俘势和撤掉陷俘势时两个凝聚体间的相互作用.发现当存在陷俘势时两个凝聚体间发生弹性碰撞;在零时刻撤掉陷俘势时两个凝聚体间发生干涉现象;当t=2时撤掉陷俘势两个凝聚体间发生了复杂现象.
The symplectic method is applied to solve numerically the 1D time-dependent Gross-Pitaevskii（GP） equation. The interaction of two Bose-Einstein condensates is investigated when the external potential is exist or the external potential is set to zero. The elastic collision will occur when the external potential is exist. If the external potential is set to zero at t = 0, the interference is observed between two condensates. While if the external potential is set to zero at t = 2, the interaction between two condensates is complex.
出处
《原子与分子物理学报》
CAS
CSCD
北大核心
2007年第2期418-420,共3页
Journal of Atomic and Molecular Physics
基金
国家自然科学基金(10574057
10571074)
高等学校博士学科点专项科研基金(20050183010)
关键词
玻色-爱因斯坦凝聚
GP方程
辛算法
弹性碰撞
干涉
Bose-Einstein condensation, GP equation, symplectic method, elastic collision, interference
