大学物理 ›› 2022, Vol. 41 ›› Issue (1): 8-.doi: 10.16854 / j.cnki.1000-0712.210191

• 教学研究 • 上一篇    下一篇

外势对物质波孤子的吸引和排斥

王 艳   

  1. 长治学院 电子信息与物理系,山西 长治 046011
  • 收稿日期:2021-04-15 修回日期:2021-06-04 出版日期:2022-01-20 发布日期:2022-01-11
  • 作者简介:王艳( 1979—) ,女,山西长治人,长治学院电子信息与物理系副教授,硕士,主要从事理论物理的研究工作.
  • 基金资助:
    国家自然科学基金( 11704339) 资助

Attracting and repelling of matter wave solitons by external potentials

WANG Yan   

  1. Department of Electronic Information and Physics,Changzhi University,Changzhi,Shanxi 046011,China
  • Received:2021-04-15 Revised:2021-06-04 Online:2022-01-20 Published:2022-01-11

摘要: 本文运用拉格朗日理论研究了物质波孤子在外势作用下的运动情况,主要讨论了初速度为零的孤子在势井和势垒中所表现出的不同行为,结果显示势垒能排斥孤子,势井能吸引孤子,并用数值模拟的方法使其得到了验证.

关键词: 玻色-爱因斯坦凝聚, 孤子, 拉格朗日

Abstract: The theoretical results are presented using the Lagrange approach for matter wave

solitons motion in some external potentials. The focus is the solitons with zero initial

velocity,which exhibit different behaviors in po- tential wells and barriers,and the results are

that the barrier repels solitons and the potential well attracts solitons. These conclusions are

verified by numerical simulation.

Key words: Bose-Einstein condensate, soliton, Lagrangian