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Linelike hardcore bosonic domain walls in a staggered potential on honeycomblattice are studied using quantum Monte Carlo simulations. The phase diagramsof ribbons with zigzag and armchair domain walls are mapped, which containsuperfluid and insulator phases at various fillings. In the $\rho=\frac{1}{2}$insulator, the domain wall separates two charge-density-wave (CDW) regions withopposite Berry curvatures. Associated with the change of topologicalproperties, superfluid transport occurs down the domain wall. The superfluiddensity associated with a zigzag domain wall is much larger than that of anarmchair domain wall due to the different arrangements of occupied andunoccupied sites along the domain wall. Our results provide a concrete contextto study bosonic topological phenomena, which may be simulated experimentallyusing bosonic cold atoms trapped in optical lattices.

Hardcore bosonic domain walls on honeycomb lattice