论文标题
蜂窝状晶格上的硬核玻色域墙壁
Hardcore bosonic domain walls on honeycomb lattice
论文作者
论文摘要
使用量子蒙特卡洛模拟研究了蜂窝状晶格上交错电势中的linelike硬核玻色域壁。绘制了带有锯齿形和扶手椅域墙壁的丝带的相图，这些丝网绘制了各种填充物的超流体和绝缘体阶段。在$ρ= \ frac {1} {2} $绝缘子中，域墙将两个电荷密度波（CDW）区域与相反的浆果曲线分开。与拓扑特性的变化相关，超流体运输发生在域壁下。与锯齿形域壁相关的超流体密度远大于扶手椅域壁的密度，这是由于沿域壁的占用和空地的不同排列。我们的结果提供了研究骨器拓扑现象的具体背景，可以使用被困在光学晶格中的骨气冷原子进行实验模拟。
Linelike hardcore bosonic domain walls in a staggered potential on honeycomb lattice are studied using quantum Monte Carlo simulations. The phase diagrams of ribbons with zigzag and armchair domain walls are mapped, which contain superfluid and insulator phases at various fillings. In the $ρ=\frac{1}{2}$ insulator, the domain wall separates two charge-density-wave (CDW) regions with opposite Berry curvatures. Associated with the change of topological properties, superfluid transport occurs down the domain wall. The superfluid density associated with a zigzag domain wall is much larger than that of an armchair domain wall due to the different arrangements of occupied and unoccupied sites along the domain wall. Our results provide a concrete context to study bosonic topological phenomena, which may be simulated experimentally using bosonic cold atoms trapped in optical lattices.
