玻色爱因斯坦凝聚体中暗孤子动力学研究  

Kinetic study of dark soliton in Bose-Einstein condensate

作　　者：刘超飞[1] 潘小青[1] 张赣源[2] 

机构地区：[1]江西理工大学理学院,江西赣州341000 [2]江西理工大学应用科学院,江西赣州341000

出　　处：《江西理工大学学报》2016年第5期102-111,共10页Journal of Jiangxi University of Science and Technology

基　　金：国家自然科学基金资助项目(11304130;11365010;61565007);江西省教育厅资助项目(GJJ150685);江西省科技厅资助项目(20151BAB212002);江西理工大学清江青年英才支持计划资助

摘　　要：文章从侦测暗孤子能量的角度,全面介绍了玻色爱因斯坦凝聚体中暗孤子发生声波辐射以及与声波相互作用的动力学行为.虽然暗孤子-声波相互作用导致暗孤子能量变化,暗孤子在简谐势阱中,以及简谐势阱受到扰动时,都具有类似粒子运动的动力学行为.考虑Rabi耦合时,暗孤子还可以转化为稳定传播的矢量暗孤子.文章对玻色爱因斯坦凝聚体中暗孤子动力学研究的进行全面总结,将加深人们对暗孤子现象的认识.此外,类似暗孤子-声波相互作用的行为,也将出现在其他孤子动力学研究中.By exploring the energy of dark soliton, this paper systematically introduces the dynamical behavior of sound-emission of dark soliton and dark soliton-sound interaction in Bose-Einstein condensate. Although the dark soliton-sound interaction leads to the change of the dark soliton＇s energy, dark soliton displays the particle-like behavior very well in the harmonic potential and even in the periodic perturbed harmonic trap. Under the Rabi coupling, dark soliton can transfer into the vector dark soliton, which propagates stably in the condensates. This paper provides a full overview of the kinetic study of dark soliton, and it will greatly increase people＇s knowledge about the dark soliton. Furthermore, similar behaviors of the dark soliton-sound interaction will occur in the dynamical investigation of other soliton.

关 键 词：玻色爱因斯坦凝聚 暗孤子 声波 孤子声波相互作用 简谐势阱 

分 类 号：O469[理学—凝聚态物理]