Competing order in two-band Bose-Hubbard chains with extended-range interactions
arXiv:2309.01121 · doi:10.1103/PhysRevB.109.L100507
Abstract
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, i.e. a correlated insulating phase with spontaneous breaking of translational symmetry in the lattice, while the other band supports superfluid behavior. Using the density matrix renormalization group method, we show that supersolid order can emerge from such a combination, that is, an elusive quantum state that combines crystalline order with long-range phase coherence. Depending on the filling of the bands and the interband interaction strength, the supersolid phase competes with phase-separation, superfluid order, or Mott insulating density-wave order. As a possible setup to observe supersolidity, we propose the combination of a lower band supporting density-wave order and a thermally excited band that supports superfluidity due to weaker lattice confinement.
References in corpus (46)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- The density-matrix renormalization group in the age of matrix product states
- Cold bosonic atoms in optical lattices
- Many-Body Physics with Individually-Controlled Rydberg Atoms
- The ITensor Software Library for Tensor Network Calculations
- A Thouless Quantum Pump with Ultracold Bosonic Atoms in an Optical Superlattice
- Quantum phases of dipolar bosons in optical lattices
- Non-standard Hubbard models in optical lattices: a review
- Dipolar physics: A review of experiments with magnetic quantum gases
- Many-body interferometry of a Rydberg-dressed spin lattice
- Orbital superfluidity in the -band of a bipartite optical square lattice
- Extended Bose-Hubbard Models with Ultracold Magnetic Atoms
- Quantum Phases of Cold Polar Molecules in 2D Optical Lattices
- Hidden order in 1D Bose insulators
- Supersolids versus phase separation in two-dimensional lattice bosons
- Revealing Hidden Antiferromagnetic Correlations in Doped Hubbard Chains via String Correlators
- Quantum phase transition to unconventional multi-orbital superfluidity in optical lattices
- Metastable states of a gas of dipolar bosons in a 2D optical lattice
- Creation of a dipolar superfluid in optical lattices
- Ultracold Dipolar Gases in Optical Lattices
- Phase diagram of the extended Bose Hubbard model
- Supersolid phases in the one dimensional extended soft core Bosonic Hubbard model
- Breakdown of integrability in a quasi-one-dimensional ultracold bosonic gas
- Physics of higher orbital bands in optical lattices: a review
- Dipolar Molecules in Optical Lattices
- Dipolar quantum solids emerging in a Hubbard quantum simulator
- Quench Dynamics of a Fermi Gas with Strong Non-Local Interactions
- Pair-supersolid phase in a bilayer system of dipolar lattice bosons
- Complete devil's staircase and crystal--superfluid transitions in a dipolar XXZ spin chain: A trapped ion quantum simulation
- Ultracold dipolar gas in an optical lattice: the fate of metastable states
- Ground-State Phase Diagram of the Two-Dimensional Extended Bose-Hubbard Model
- Extended Bose-Hubbard model with dipolar excitons
- Realizing discontinuous quantum phase transitions in a strongly-correlated driven optical lattice
- Multiband bosons in optical lattices
- Competing Supersolid and Haldane Insulator phases in the extended one-dimensional bosonic Hubbard model
- Supersolid and solitonic phases in one-dimensional Extended Bose-Hubbard model
- Homogeneous and inhomogeneous magnetic phases of constrained dipolar bosons
- Mott insulator of strongly interacting two-dimensional excitons
- Competing phases, phase separation and co-existence in the extended one-dimensional bosonic Hubbard model
- Accurate determination of the scattering length of erbium atoms
- Quantum spin models with long-range interactions and tunnelings: A quantum Monte Carlo study
- Twisted complex superfluids in optical lattices
- Maximally localized Wannier functions for ultracold atoms in one-dimensional double-well periodic potentials
- Multiband Effects and the Bose-Hubbard Model in One-Dimensional Lattices
- Exotic Haldane Superfluid Phase of Soft-Core Bosons in Optical Lattices
- Orbital order in a bosonic -band triangular lattice