Density dependent tunneling in the extended Bose-Hubbard model
arXiv:1306.5608 · doi:10.1088/1367-2630/15/11/113041
Abstract
Recently, it has become apparent that, when the interactions between polar molecules in optical lattices becomes strong, the conventional description using the extended Hubbard model has to be modified by additional terms, in particular a density-dependent tunneling term. We investigate here the influence of this term on the ground-state phase diagrams of the two dimensional extended Bose-Hubbard model. Using Quantum Monte Carlo simulations, we investigate the changes of the superfluid, supersolid, and phase-separated parameter regions in the phase diagram of the system. By studying the interplay of the density-dependent hopping with the usual on-site interaction U and nearest-neighbor repulsion V, we show that the ground-state phase diagrams differ significantly from the ones that are expected from the standard extended Bose-Hubbard model. However we find no indication of pair-superfluid behavior in this two dimensional square lattice study in contrast to the one-dimensional case.
References in corpus (15)
- Many-Body Physics with Ultracold Gases
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Supersolid hardcore bosons on the triangular lattice
- Bose-Fermi Mixtures in a Three-dimensional Optical Lattice
- Hidden order in 1D Bose insulators
- Degenerate Bose-Bose mixture in a three-dimensional optical lattice
- Supersolids versus phase separation in two-dimensional lattice bosons
- Absence of supersolidity in solid helium in porous Vycor glass
- Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
- Interaction-driven Dynamics of 40K / 87Rb Fermi-Bose Gas Mixtures in the Large Particle Number Limit
- Supersolid phases in the one dimensional extended soft core Bosonic Hubbard model
- Pair Superfluidity of Three-Body Constrained Bosons in Two Dimensions
- Bose-Hubbard model with occupation dependent parameters
- Dynamics of cold bosons in optical lattices: Effects of higher Bloch bands
Cited by in corpus (28)
- Non-standard Hubbard models in optical lattices: a review
- Hole superconductivity in infinite-layer nickelates
- Extended Bose-Hubbard Model with dipolar and contact interactions
- Staggered superfluid phases of dipolar bosons in two-dimensional square lattices
- Twisted complex superfluids in optical lattices
- Superfluid phases induced by the dipolar interactions
- Interaction-driven dynamical quantum phase transitions in a strongly correlated bosonic system
- Quantum Phases from Competing Van der Waals and Dipole-Dipole Interactions of Rydberg Atoms
- Lattice control of non-ergodicity in a polar lattice gas
- Twisted superfluid phase in the extended one-dimensional Bose-Hubbard model
- Optimal and near-optimal probe states for quantum metrology of number conserving two-mode bosonic Hamiltonians
- Twonniers: Interaction-induced effects on Bose-Hubbard parameters
- Quantum phases of dipolar bosons in one-dimensional optical lattices
- Bond order via cavity-mediated interactions
- Ground states of 2D tilted dipolar bosons with density-induced hopping
- Spatial adiabatic passage via interaction-induced band separation
- Staggered Ground States in an Optical Lattice
- Realizing multiband states with ultracold dipolar quantum simulators
- The role of density-dependent magnon hopping and magnon-magnon repulsion in ferrimagnetic spin-(1/2, ) chains in a magnetic field
- Clustered Superfluids in the One Dimensional Bose-Hubbard model with extended correlated hopping
- Quantum phase transition in a shallow one-dimensional optical lattice
- The role of interaction-induced tunneling in the dynamics of polar lattice bosons
- Super-Tonks-Girardeau Quench in the Extended Bose-Hubbard Model
- Entanglement in spatial adiabatic processes for interacting atoms
- Many-body tunneling in a double-well potential
- Miscibility-Immiscibility transition of strongly interacting bosonic mixtures in optical lattices
- Devil's staircase of topological Peierls insulators and Peierls supersolids
- Stability via symmetry breaking in interacting driven systems