Competing order in two-band Bose-Hubbard chains with extended-range interactions
Competing order in two-band Bose-Hubbard chains with extended-range interactions
Motivated by the recent progress in realizing and controlling extended Bose-Hubbard systems using excitonic or atomic devices, the present Letter theoretically investigates the case of a two-band Bose-Hubbard chain with nearest-neighbor interactions. Specifically, this study concentrates on the scenario where, due to the interactions, one band supports a density-wave phase, …