Merging and splitting dynamics between two bright solitons in dipolar Bose-Einstein condensates

doi:10.1088/1674-1056/abff3f

中国物理B ›› 2021, Vol. 30 ›› Issue (12): 120501-120501.doi: 10.1088/1674-1056/abff3f

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

收稿日期:2021-03-02 修回日期:2021-03-02 接受日期:2021-05-10 出版日期:2021-11-15 发布日期:2021-11-15
通讯作者: Zhan-Ying Yang E-mail:zyyang@nwu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11875220 and 12047502).

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

Received:2021-03-02 Revised:2021-03-02 Accepted:2021-05-10 Online:2021-11-15 Published:2021-11-15
Contact: Zhan-Ying Yang E-mail:zyyang@nwu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11875220 and 12047502).

摘要/Abstract

摘要： 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.

关键词: bright soliton, Bose-Einstein condensate, dipolar soliton

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.

Key words: bright soliton, Bose-Einstein condensate, dipolar soliton

中图分类号: (Nonlinear dynamics and chaos)

05.45.-a

03.75.Nt (Other Bose-Einstein condensation phenomena) 34.50.-s (Scattering of atoms and molecules)

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[J]. 中国物理B, 2021, 30(12): 120501-120501.

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[J]. Chin. Phys. B, 2021, 30(12): 120501-120501.

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Merging and splitting dynamics between two bright solitons in dipolar Bose-Einstein condensates

Merging and splitting dynamics between two bright solitons in dipolar Bose-Einstein condensates

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