Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate

doi:10.1088/1674-1056/27/1/016702

中国物理B ›› 2018, Vol. 27 ›› Issue (1): 16702-016702.doi: 10.1088/1674-1056/27/1/016702

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate

T F Xu(徐天赋)

Hebei Key Laboratory of Microstructural Material Physics, School of Science, Yanshan University, Qinhuangdao 066004, China

收稿日期:2017-08-07 出版日期:2018-01-05 发布日期:2018-01-05
通讯作者: T F Xu E-mail:tfxu@ysu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304270 and 11475144).

Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate

T F Xu(徐天赋)

Hebei Key Laboratory of Microstructural Material Physics, School of Science, Yanshan University, Qinhuangdao 066004, China

Received:2017-08-07 Online:2018-01-05 Published:2018-01-05
Contact: T F Xu E-mail:tfxu@ysu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11304270 and 11475144).

摘要/Abstract

摘要： We study two types of bright solitons in an attractive Bose-Einstein condensate with a spin-orbit interaction. By solving the coupled nonlinear Schrödinger equations with the variational method and the imaginary time evolution method, fundamental properties of solitons are carefully investigated in different parameter regimes. It is shown that the detuning between the Raman beam and energy states of the atoms dominates the ground state type and spin polarization strength. The soliton dynamics is also studied for various moving velocities for zero and nonzero detuning cases. We find that the shape of individual component solitons can be maintained when the moving speed of solitons is low and the detuning is small in the coupled harmonically trapped pseudo-spin polarization Bose-Einstein condensate.

关键词: bright solitons, spin-orbit interaction, spin polarization

Abstract: We study two types of bright solitons in an attractive Bose-Einstein condensate with a spin-orbit interaction. By solving the coupled nonlinear Schrödinger equations with the variational method and the imaginary time evolution method, fundamental properties of solitons are carefully investigated in different parameter regimes. It is shown that the detuning between the Raman beam and energy states of the atoms dominates the ground state type and spin polarization strength. The soliton dynamics is also studied for various moving velocities for zero and nonzero detuning cases. We find that the shape of individual component solitons can be maintained when the moving speed of solitons is low and the detuning is small in the coupled harmonically trapped pseudo-spin polarization Bose-Einstein condensate.

Key words: bright solitons, spin-orbit interaction, spin polarization

中图分类号: (Ultracold gases, trapped gases)

67.85.-d

03.75.Lm (Tunneling, Josephson effect, Bose-Einstein condensates in periodic potentials, solitons, vortices, and topological excitations)

徐天赋. Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate[J]. 中国物理B, 2018, 27(1): 16702-016702.

T F Xu(徐天赋). Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate[J]. Chin. Phys. B, 2018, 27(1): 16702-016702.

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Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate

Two types of ground-state bright solitons in a coupled harmonically trapped pseudo-spin polarization Bose–Einstein condensate

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