We develop an inhomogeneous mean-field theory for the extended Bose-Hubbard model with a quadratic, confining potential. In the absence of this potential, our mean-field theory yields the phase diagram of the homogeneous extended Bose-Hubbard model. This phase diagram shows a superfluid (SF) ...
The extended Bose-Hubbard model captures the essential properties of a wide variety of physical systems including ultracold atoms and molecules in optical lattices, Josephson junction arrays, and certain narrow band superconductors. It exhibits a rich phase diagram including a supersolid phase where a ...
extended Bose-Hubbard modeleffective ground statepair tunnelingThe extended Bose-Hubbard model for a double-well potential with pair tunneling is studied through both exact diagonalization and mean field theory (MFT). When pair tunneling is strong enough, the ground state wavefunction predicted by the...
Publisher Correction: Disordered Supersolids in the Extended Bose-Hubbard ModelThe quantum compass model has been proposed as a simplified model to study Mott insulators with orbital degeneracy and, more recently, as a candidate model to study protected non-local qubits. In this talk we will show...
We investigate the ground-state phase diagram of the soft-core Bose-Hubbard model with the nearest-neighbor repulsion on a square lattice by using an unbiased quantum Monte Carlo method. In contrast to a previous study [P. Sengupta , Phys. Rev. Lett.PRLTAO0031-900710.1103/PhysRevLett....
2.This constraint stabilizes the attractive bosonic system (U<0) from collapse. If U>0, the ground states are either Mott insulator or atomic superfluid phases of Bose-Hubbard model. 1.The DSF order parameter transforms with the double phase ~ exp(2iθ) compared to the ASF order parameter...
4.Mean-Field Theory for Extended Bose-Hubbard Model with Hard-Core Bosons and spring 机译:具有硬核磁杆的扩展Bose-Hubbard模型的平均场理论 Nicolas Gheeraert ,Shai Chester ,Mathias May 2016 5.Non-linear response of two-dimensional electron systems at low temperatures to electric and magnetic fiel...
We present a scheme to realize the (extended) Bose-Hubbard model in an $N$-coupled optomechanical system. By treating the cavities as intermediary and eliminating them adiabatically with the condition of large detuning or fast decay, we can obtain the effective Hamiltonian for the $N$ ...
We study the one-dimensional extended Bose-Hubbard model in incommensurate densities using the density matrix renormalization group with the mean-filed (CMFT+DMRG)and density matrix renormalization group (DMRG) methods. We focus on the region of the phase diagram where onsite interaction (U) is ...
Bose-Hubbard models with cavity-mediated global range interactions display phase diagrams, which are very similar to those with nearest neighbor repulsive interactions, but the Haldane phase remains elusive there. Here we study the one-dimensional Bose-Hubbard model with nearest-neighbor and cavity-...