论文标题
拉曼自旋轨道偶联系统中的相关性增强了超莫利德条纹
Supersolid Stripes Enhanced by Correlations in a Raman Spin-Orbit-Coupled System
论文作者
论文摘要
使用离散的自旋T-Moves扩散蒙特卡洛法对拉曼自旋轨道耦合（SOC）作用下的bose气体进行分析。通过计算系统的能量以及静态结构因子和超流体分数，观察到了能量有利的超固定条纹状态的出现，这与最近的观察结果一致。当增强原子间相关性的强度时，观察到条纹相对于平均场预测的稳定性的显着增强。我们还量化和表征条纹的超流体程度，并表明该数量主要取决于拉曼耦合之间的比率和一对诱导SOC诱导激光束之间动量差异的平方。
A Bose gas under the effect of Raman Spin-Orbit Coupling (SOC) is analyzed using the Discrete Spin T-moves Diffusion Monte Carlo method. By computing the energy as well as the static structure factor and the superfluid fraction of the system, the emergence of an energetically favorable supersolid stripe state is observed, which is in agreement with recent observations. A significant enhancement of the stability of the stripe phase with respect to the mean-field prediction is observed when the strength of the inter-atomic correlations is increased. We also quantify and characterize the degree of superfluidity of the stripes and show that this quantity is mostly determined by the ratio between the Raman coupling and the square of the momentum difference between the pair of SOC inducing laser beams.
