三势阱玻色爱因斯坦凝聚体三体复合效应的数值研究

摘要

文章中着重研究在三势阱中的凝聚体所受到的非弹性碰撞相互作用，考虑有三体复合耗散和原子填充时三势阱中玻色-爱因斯坦凝聚体动力学性质，研究了三势阱中玻色-爱因斯坦凝聚体系的自囚禁与宏观量子遂穿问题，用数值分析和解析推导的方法，发现自俘获和宏观量子隧穿现，另外，在自俘获和宏观量子隧穿进程中发现了量子拍现象，并对这些现象给出合理的解释。%We study the three-body interaction in triple-well trapped Bose-Einstein Condensates. We investigate the stability in triple-well trapped Bose-Einstein condensates with atoms feeding and loss effects, self-trapping phenomenon and macroscopic tunnelling problem in triple-well trapped Bose-Einstein condensates are investigated. We observe the quantum beating phenomenon during the self-trapping and quantum tunnelling. At last,reasonable interpretations for these findings are given with numerical and analytical method.