Dynamics of spin-nematic bright solitary waves in spin-tensor-momentum coupled Bose-Einstein condensates
Dynamics of spin-nematic bright solitary waves in spin-tensor-momentum coupled Bose-Einstein condensates
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DOI：
10.1103/physreva.107.033308
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发表时间：
2023-03
影响因子：
2.9
通讯作者：
Xu Qiu;Aiyuan Hu;Yongyong Cai;H. Saito;Xiao-Fei Zhang;L. Wen
中科院分区：
文献类型：
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作者：
Xu Qiu;Aiyuan Hu;Yongyong Cai;H. Saito;Xiao-Fei Zhang;L. Wen
我们探索了一维自旋-张量-动量耦合自旋-1玻色-爱因斯坦凝聚体中明亮孤波的动力学。我们的结果表明，孤立波同时具有非零自旋和向列性，因此我们称它们为自旋向列孤立波。基态孤波具有有限动量，并表现出由对称破缺引起的零能量模式。在孤立波的运动中，自旋张量-动量耦合引起单位布洛赫球上自旋向列矢量的翻转，从而产生一个力导致孤立波的振荡运动。分析了谐波陷阱的作用。这些发现揭示了受自旋张量-动量耦合影响的孤立波的独特性质。
We explore the dynamics of bright solitary waves in one-dimensional spin-tensor-momentum coupled spin-1 Bose-Einstein condensates. Our results show that the solitary waves have nonzero spin and nematicity simultaneously, hence we call them spin-nematic solitary waves. The ground-state solitary waves carry a finite momentum and display the zero-energy modes arising from symmetry breaking. In the motion of the solitary wave, the spin-tensor-momentum coupling induces the flip of the spin-nematic vector on a unit Bloch sphere, which in turn produces a force to result in the oscillatory motion of the solitary wave. The effects of a harmonic trap are also analyzed. These findings reveal the unique properties of solitary waves affected by the spin-tensor-momentum coupling.