论文标题
2D倾斜的双极玻色子的基态，其密度引起的跳跃
Ground states of 2D tilted dipolar bosons with density-induced hopping
论文作者
论文摘要
通过捕获在原子偶极子的光学晶格中的超电磁原子的最新实验，可以通过外部田地充分控制原子偶极子的方向，我们研究了偶极性玻色子的基态特性，这些偶极性玻色子的基态性能被困在二维晶格中，其密度诱导的旋转和沿二叠极的沿$ xz $ xz $ xz $ xz $ xz $ xz $ xz $ xz $ xz $ xz $ xz。我们以不同的倾斜角度介绍上述系统的基态相图。我们发现，随着偶极相互作用的增加，半填充因子的超氟相位被破坏，有利于倾斜角$θ\ Lessim 35.3^{\ circ} $或$θ\ gtrsim 35.3^^{\ circ} $的倾斜角$θ\ sillesim 35.3^{\ circ} $ 35.3^{\ circ} $。更有趣的物理学发生在倾斜角$θ\ gtrsim 58^{\ circ} $，我们发现，随着偶极相互作用强度的提高，固体相位首先出现在填充因子低于$ 0.5 $的情况下。此外，与在较低的角度观察到的不同，我们发现，在半填充时，条纹超固体介入超流体和条纹固相之间。
Motivated by recent experiments with ultracold magnetic atoms trapped in optical lattices where the orientation of atomic dipoles can be fully controlled by external fields, we study the ground state properties of dipolar bosons trapped in a two-dimensional lattice with density-induced hopping and where the dipoles are tilted along the $xz$ plane. We present ground state phase diagrams of the above system at different tilt angles. We find that, as the dipolar interaction increases, the superfluid phase at half filling factor is destroyed in favor of either a checkerboard or stripe solid phase for tilt angle $θ\lesssim 35.3^{\circ}$ or $θ\gtrsim 35.3^{\circ}$ respectively. More interesting physics happens at tilt angles $θ\gtrsim 58^{\circ}$, where we find that, as the dipolar interaction strength increases, solid phases first appear at filling factor lower than $0.5$. Moreover, unlike what observed at lower tilt angles, we find that, at half filling, a stripe supersolid intervenes between the superfluid and stripe solid phase.
