Superfluid-Mott insulator transition in spin-orbit coupled Bose-Hubbard Model
arXiv:1401.0527 · doi:10.1103/PhysRevA.89.043603
Abstract
We consider a square optical lattice in two dimensions and study the effects of both the strength and symmetry of spin-orbit-coupling (SOC) and Zeeman field on the ground-state, i.e., Mott insulator (MI) and superfluid (SF), phases and phase diagram, i.e., MI-SF phase transition boundary, of the two-component Bose-Hubbard model. In particular, based on a variational Gutzwiller ansatz, our numerical calculations show that the spin-orbit coupled SF phase is a nonuniform (twisted) one with its phase (but not the magnitude) of the order parameter modulating from site to site. Fully analytical insights into the numerical results are also given.
12 pages with 6 figures
References in corpus (14)
- Many-Body Physics with Ultracold Gases
- Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
- Theory of ultracold Fermi gases
- Spin-orbit coupling in quantum gases
- Spin-Injection Spectroscopy of a Spin-Orbit Coupled Fermi Gas
- Double species condensate with tunable interspecies interactions
- Spin-orbit coupled Bose-Einstein condensates
- Bose Hubbard Models with Synthetic Spin-Orbit Coupling: Mott Insulators, Spin Textures and Superfluidity
- Exotic quantum spin models in spin-orbit-coupled Mott insulators
- Superfluidity of Interacting Bosonic Mixtures in Optical Lattices
- Quantum Spin Dynamics of Mode-Squeezed Luttinger Liquids in Two-Component Atomic Gases
- Strong-coupling expansion for the momentum distribution of the Bose Hubbard model with benchmarking against exact numerical results
- Mott-insulator phases of non-locally coupled 1D dipolar Bose gases
- Topological transport in a spin-orbit coupled bosonic Mott insulator
Cited by in corpus (8)
- The evolution of magnetic structure driven by a synthetic spin-orbit coupling in two-component Bose-Hubbard model
- A Hubbard model for ultracold bosonic atoms interacting via zero-point-energy induced three-body interactions
- Spiral spin textures of bosonic Mott insulator with SU(3) spin-orbit coupling
- Simulating systems of itinerant spin-carrying particles using arrays of superconducting qubits and resonators
- Ground state properties of a multi-component bosonic mixture: a Gutzwiller mean-field study
- Thermal transitions of the modulated superfluid for spin-orbit coupled correlated bosons in an optical lattice
- Density-Dependent Gauge Field with Raman Lattices
- Spin-orbit coupling driven superfluid states in optical lattices at zero and finite temperatures