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arXiv 2007.04196cond-mat.quant-gas
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拉曼自旋轨道耦合系统中的超固态条纹液滴

Supersolid Striped Droplets in a Raman Spin-Orbit-Coupled System

J. Sánchez-Baena, J. Boronat, F. Mazzanti

摘要:

我们分析了量子涨落在拉曼自旋轨道耦合系统条纹相位中所起的作用。我们发现,超出平均场效应稳定的崩溃预测的平均场论,并诱导出现两个阶段:气体和液体,这也显示出空间周期性沿一个特权方向。我们表明,积极有利的阶段是由拉曼耦合和自旋相关的散射长度。我们通过求解扩展的Gross-Pitaevskii方程获得了有限系统的基态解,并找到了具有条纹图案内部结构的自约束、液滴状解。我们估计与这些液滴结合的临界数,并表明它们的值是实验上可访问的。我们报告一个近似的能量泛函,以便于评估的李黄杨校正在实践中。

英文摘要:

We analyze the role played by quantum fluctuations on a Raman Spin-Orbit Coupled system in the stripe phase. We show that beyond mean-field effects stabilize the collapse predicted by mean-field theory and induce the emergence of two phases: a gas and a liquid, which also show spatial periodicity along a privileged direction. We show that the energetically favored phase is determined by the Raman coupling and the spin-dependent scattering lengths. We obtain the ground-state solution of the finite system by solving the extended Gross-Pitaevskii equation and find self-bound, droplet-like solutions that feature internal structure through a striped pattern. We estimate the critical number for binding associated to these droplets and show that their value is experimentally accessible. We report an approximate energy functional in order to ease the evaluation of the Lee-Huang-Yang correction in practical terms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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