摘要
We investigate kink-dark complex solitons(KDCSs)in a three-component Bose–Einstein condensate(BEC)with repulsive interactions and pair-transition(PT)effects.Soliton profiles critically depend on the phase differences between dark solitons excitation elements.We report a type of kink-dark soliton profile which shows a droplet-bubble-droplet with a density dip,in sharp contrast to previously studied bubble-droplets.The interaction between two KDCSs is further investigated.It demonstrates some striking particle transition behaviours during their collision processes,while soliton profiles survive after the collision.Additionally,we exhibit the state transition dynamics between a kink soliton and a dark soliton.These results suggest that PT effects can induce more abundant complex solitons dynamics in multi-component BEC.
基金
supported by the National Natural Science Foundation of China(Contract No.12022513,11775176,11947301)
the Major Basic Research Program of Natural Science of Shaanxi Province(Grant No.2018KJXX-094)
the Scientific Research Program Funded by Shaanxi Provincial Education Department(Grant No.20JK0872 and 2017KCT-12)。
