Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices

Abstract

Phase transitions in systems described by Bose-Fermi-Hubbard model on a lattice with two nonequivalent sublattices are investigated in this work. The case of hard-core bosons is considered and pseudospin formalism is used. Phase diagrams are built in the plain of chemical potential of the bosons-bosonic hopping parameter. It is shown that in the case of anisotropic hopping, the region of the supersolid phase existence is possible for a smaller parameter space.

8 pages, 5 figures

References in corpus (7)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• A lattice of double wells for manipulating pairs of cold atoms
• Mixtures of Bosonic and Fermionic Atoms in Optical Lattices
• Supersolid Bose-Fermi Mixtures in Optical Lattices
• Phase Diagram for Ultracold Bosons in Optical Lattices and Superlattices
• Quantum Transport of Bosonic Cold Atoms in Double Well Optical Lattices
• Bose-Fermi mixtures in 1D optical superlattices