Superfluid and Mott Insulator phases of one-dimensional Bose-Fermi mixtures
arXiv:0711.4635 · doi:10.1103/PhysRevA.78.033619
Abstract
We study the ground state phases of Bose-Fermi mixtures in one-dimensional optical lattices with quantum Monte Carlo simulations using the Canonical Worm algorithm. Depending on the filling of bosons and fermions, and the on-site intra- and inter-species interaction, different kinds of incompressible and superfluid phases appear. On the compressible side, correlations between bosons and fermions can lead to a distinctive behavior of the bosonic superfluid density and the fermionic stiffness, as well as of the equal-time Green functions, which allow one to identify regions where the two species exhibit anticorrelated flow. We present here complete phase diagrams for these systems at different fillings and as a function of the interaction parameters.
8 pages, 12 figures
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- Generalized Dynamical Mean-Field Theory for Bose-Fermi Mixtures in Optical Lattices
- Feshbach-Einstein condensates
- Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures
- Phases and collective modes of hardcore Bose-Fermi mixture in an optical lattice
- Mixture of Tonks-Girardeau gas and Fermi gas in one-dimensional optical lattices
- Using off-diagonal confinement as a cooling method
- Insulator phases of Bose-Fermi mixtures induced by intraspecies next-neighbor interactions