论文标题
移动杂质与几个一维晶格玻色子相互作用
Mobile impurities interacting with a few one-dimensional lattice bosons
论文作者
论文摘要
我们报告了一项综合研究，对浸入小的一维光学晶格中的一个和两种骨质杂质的地面特性，并带有一些相互作用的玻色子。我们用两个组件的玻色纸模型对系统进行建模，并通过精确的对角线化（ED）方法来数值解决问题。我们报告了跨超氟（SF）的一个和两个杂质的结合能量与莫特 - 绝缘体（MI）转变，并确认由排斥相互作用引起的杂质的两体结合状态的形成。特别是，我们发现绝缘浴会诱导紧密结合的Di Impurity二聚体，而超氟浴室会诱导较浅的结合状态。
We report a comprehensive study of the ground-state properties of one and two bosonic impurities immersed in small one-dimensional optical lattices loaded with a few interacting bosons. We model the system with a two-component Bose-Hubbard model and solve the problem numerically by means of the exact diagonalization (ED) method. We report binding energies of one and two impurities across the superfluid (SF) to Mott-insulator (MI) transition and confirm the formation of two-body bound states of impurities induced by repulsive interactions. In particular, we found that an insulator bath induces tightly bound di-impurity dimers, whereas a superfluid bath induces shallower bound states.
