论文标题
在一维玻色 - 哈伯德模型中群集超级流体，具有扩展相关的跳跃
Clustered Superfluids in the One Dimensional Bose-Hubbard model with extended correlated hopping
论文作者
论文摘要
具有非平凡相互作用的玻色晶晶格系统代表了研究物质外来阶段的有趣平台。在这里，我们研究了被困在晶格几何形状中的玻色子系统中扩展相关的跳跃过程的影响。通过精确的对角度，强耦合膨胀和群集平均场理论的结合，研究了单个粒子隧道术语，相关跳跃过程和现场排斥之间的相互作用。我们确定了丰富的基态相图，除了通常的莫特和超流体状态外，出现了具有有趣聚类特性的超流体相。
Bosonic lattice systems with non-trivial interactions represent an intriguing platform to study exotic phases of matter. Here, we study the effects of extended correlated hopping processes in a system of bosons trapped in a lattice geometry. The interplay between single particle tunneling terms, correlated hopping processes and on-site repulsion is studied by means of a combination of exact diagonalization, strong coupling expansion and cluster mean field theory. We identify a rich ground state phase diagram where, apart the usual Mott and superfluid states, superfluid phases with interesting clustering properties occur.
