Quantum phases of constrained bosons on a two-leg Bose-Hubbard ladder
arXiv:2304.11747 · doi:10.1103/PhysRevA.108.013316
Abstract
Bosons in periodic potentials with very strong local interactions, known as the constrained bosons often exhibit interesting physical behavior. We investigate the ground state properties of a two-leg Bose-Hubbard ladder by imposing three-body constraint in one leg and hardcore constraint in the other. By using the cluster-mean-field theory approximation and the density matrix renormalization group method, we show that at unit filling, for strong two-body attraction among the three-body constrained bosons, the system becomes a gapped pair-Mott insulator where all the bosons form strong bound pairs and occupy the leg with three-body constraint. With increase in hopping strength this pair-Mott insulator phase undergoes a phase transition to the gapless superfluid phase for equal leg and rung hopping strengths. However, when the rung hopping is stronger compared to the leg hopping, we obtain a crossover to another gapped phase which is called the rung-Mott insulator phase where the bosons prefer to delocalize on the rungs than the legs. By moving away from unit filling, the system remains in the superfluid phase except for a small region below the gapped phase where a pair superfluid phase is stabilized in the regime of strong attractive interaction. We further extend our studies by considering three-body constraint on both the legs and find that the crossover from the gapped to gapped phase does not occur rather the system undergoes a transition from a pair-rung-Mott insulator phase to the superfluid phase at unit filling. Moreover, in this case we find the signature of the pair superfluid phase on either sides of this gapped phase.
12 pages, 16 figures
References in corpus (28)
- Many-Body Physics with Ultracold Gases
- 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
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Matrix Product States and Projected Entangled Pair States: Concepts, Symmetries, and Theorems
- Tools for quantum simulation with ultracold atoms in optical lattices
- Non-standard Hubbard models in optical lattices: a review
- Atomic three-body loss as a dynamical three-body interaction
- Rise and fall of hidden string order of lattice bosons
- Vortex and Meissner phases of strongly-interacting bosons on a two-leg ladder
- Symmetry-broken states in a system of interacting bosons on a two-leg ladder with a uniform Abelian gauge field
- Phase diagram of hard-core bosons on clean and disordered 2-leg ladders: Mott insulator - Luttinger liquid - Bose glass
- Quantum phases of hardcore bosons with long-range interactions on a square lattice
- Quantum phases of bosons in double-well optical lattices
- Pair Superfluidity of Three-Body Constrained Bosons in Two Dimensions
- Observation of thermalization and information scrambling in a superconducting quantum processor
- Mott transition in a two-leg Bose-Hubbard ladder under an artificial magnetic field
- Elastic Multi-Body Interactions on a Lattice
- Bose-Hubbard triangular ladder in an artificial gauge field
- A cavity-induced artificial gauge field in a Bose-Hubbard ladder
- Polar molecules in frustrated triangular ladders
- Mean field analysis of quantum phase transitions in a periodic optical superlattice
- Quantum phases of attractive bosons on a Bose-Hubbard ladder with three-body constraint
- Topological inheritance in half-SSH Hubbard models
- Quantum phases of constrained dipolar bosons in coupled one-dimensional optical lattices
- Neural-network quantum states for a two-leg Bose-Hubbard ladder under magnetic flux
- Exploring helical phases of matter in bosonic ladders
- Three-body interacting dipolar bosons and the fate of lattice supersolidity