论文标题
玻色子在晶格上的强到弱的相互作用相过渡
Strong to weak interacting-topological phase transition of bosons on a lattice
论文作者
论文摘要
我们使用量子蒙特卡洛技术（Monte Carlo Technique）在蜂窝晶格上研究了蜂窝状晶格上的硬核玻色子，以及各向异性邻居跳动。在半填充时，我们发现从强相互作用秩序转变为弱相互作用秩序，作为跳跃各向异性的功能。强拓扑阶段的特征是有限的拓扑纠缠熵，而弱拓扑顺序则以双分部分纠缠熵的非平凡值鉴定。某些顺序参数及其衍生物在改变控制晶格的参数时证明了突然的变化，从而揭示了这种相互作用的中等相变的性质。
We study hard-core bosons on the honeycomb lattice subjected to anisotropic nearest-neighbor hopping along with anisotropic nearest-neighbor repulsion, using a quantum Monte Carlo technique. At half-filling, we find a transition from strong interacting-topological order to weak interacting-topological order as function of the hopping anisotropy. The strong topological phase is characterized by a finite topological entanglement entropy, while the weak topological order is identified with a non-trivial value of the bipartite entanglement entropy. Some of the order parameters and their derivatives demonstrate abrupt changes when varying the parameters controlling the lattice anistropies, thus revealing the nature of this interacting-topological phase transition.
