论文标题
二元旋转轨道耦合的玻璃纤维凝结物中的调节不稳定性
Modulational instability in binary spin-orbit-coupled Bose-Einstein condensates
论文作者
论文摘要
我们研究了在耦合的pseudospinor波函数的两个组成部分的耦合Gross-pitaevskii方程的框架中，在两个组件自旋耦合（SOC）Bose-Einstein冷凝物（SOC）Bose-Einstein冷凝物（BEC）中的平坦状态的调节不稳定性（MI）。分析是针对组件的相等密度进行的。研究了相互作用参数，拉比耦合和SOC对MI的影响。特别是，结果表明，SOC强烈改变了众所周知的MI（不可使用）条件，$ g_ {12}> g_ {1} g_ {2} $，用于二进制超级氟化，并具有系数$ g_ {1,2} $ g_ {1,2} $和$ g_ {12} $ nesta-g_ {12} $ intera-neta-intera-intera-intera-interspecies repuls sperpecies。实际上，在SOC的作用下，二元BEC始终受到MI的约束，这意味着系统的基态由条纹阶段合理地表示。
We study modulation instability (MI) of flat states in two-component spin-orbit-coupled (SOC) Bose-Einstein condensates (BECs) in the framework of coupled Gross-Pitaevskii equations for two components of the pseudospinor wave function. The analysis is performed for equal densities of the components. Effects of the interaction parameters, Rabi coupling, and SOC on the MI are investigated. In particular, the results demonstrate that the SOC strongly alters the commonly known MI (immiscibility) condition, $g_{12} > g_{1} g_{2}$, for the binary superfluid with coefficients $g_{1,2}$ and $g_{12}$ of the intra- and interspecies repulsive interactions. In fact, the binary BEC is always subject to the MI under the action of the SOC, which implies that the ground state of the system is plausibly represented by a striped phase.
