Complete phase diagram and topological properties of interacting bosons in one-dimensional superlattices
Complete phase diagram and topological properties of interacting bosons in one-dimensional superlattices
The interacting bosons in one-dimensional inversion-symmetric superlattices are investigated from the topological aspect. The complete phase diagram is obtained by an atomic-limit analysis and quantum Monte Carlo simulations and comprises three kinds of phases: superfluid, persisted charge-density-wave and Mott insulators, and emergent insulators in the presence of nearest-neighbor hoppings. We …