Kink-like breathers in Bose–Einstein condensates with helicoidal spin–orbit coupling  

作　　者：Yixin Yang Peng Gao Li-Chen Zhao Zhan-Ying Yang 

机构地区：[1]School of Physics,Northwest University,Xi'an 710127,China [2]Shaanxi Key Laboratory for Theoretical Physics Frontiers,Xi'an 710127,China [3]Peng Huanwu Center for Fundamental Theory,Xi'an 710127,China

出　　处：《Frontiers of physics》2022年第3期155-163,共9页物理学前沿（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant Nos.11875220,12047502,and 12022513).

摘　　要：We report a kind of kink-like breathers in one-dimensional Bose–Einstein condensates (BECs) with helicoidal spin–orbit coupling (SOC), on whose two sides the background densities manifest obvious difference (called kink amplitude). The kink amplitude and shape of breather can be adjusted by the strength and period of helicoidal SOC, and its atomic number in two components exchanges periodically with time. The SOC has similar influence on the kink amplitude and the exchanged atomic number, especially when the background wave number is fixed. It indicates that the oscillating intensity of breather can be controlled by adjusting initial kink amplitude. Our work showcases the great potential of realizing novel types of breathers through SOC, and deepens our understanding on the formation mechanisms of breathers in BECs.

关 键 词：Bose–Einstein condensates spin–orbit coupling BREATHER 

分 类 号：O46[理学—电子物理学]