Merging and splitting dynamics between two bright solitons in dipolar Bose-Einstein condensates
Xin Li(李欣)1,2, Peng Gao(高鹏)1,2, Zhan-Ying Yang(杨战营)1,2,3,†, and Wen-Li Yang(杨文力)1,2,3,4
1 School of Physics, Northwest University, Xi'an 710069, China; 2 Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an 710069, China; 3 Peng Huanwu Center for Fundamental Theory, Xi'an 710127, China; 4 Institute of Modern Physics, Northwest University, Xi'an 710069, China
Abstract We numerically study the interaction dynamics of two bright solitons with zero initial velocities in the one-dimensional dipolar Bose-Einstein condensates. Under different dipolar strengths, the two bright solitons can merge into a breathing wave, and then split or propagate constantly after several oscillating periods. We quantitatively study the breathing frequency of wave after merging and the asymmetry property of solitons after splitting, and analyze their formation mechanism by the system's energy evolution. Also, the change of initial phase difference brings distinct effects on the soliton interaction. Our results provide insight into the new dynamical phenomena in dipolar systems and enrich the understanding for interaction between dipolar solitons.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11875220 and 12047502).
Corresponding Authors:
Zhan-Ying Yang
E-mail: zyyang@nwu.edu.cn
Cite this article:
Xin Li(李欣), Peng Gao(高鹏), Zhan-Ying Yang(杨战营), and Wen-Li Yang(杨文力) Merging and splitting dynamics between two bright solitons in dipolar Bose-Einstein condensates 2021 Chin. Phys. B 30 120501
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