Superfluid and Mott Insulator phases of one-dimensional Bose-Fermi mixtures

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.

arXiv comment8 pages, 12 figures

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Cited by in corpus (21)

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• Fermi gases in one dimension: From Bethe Ansatz to experiments
• Role of interactions in 87Rb-40K Bose-Fermi mixtures in a 3d optical lattice
• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Many-Body Expansion Dynamics of a Bose-Fermi Mixture Confined in an Optical Lattice
• Finite-Temperature Auxiliary-Field Quantum Monte Carlo for Bose-Fermi Mixtures
• 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
• A single fermion in a Bose Josephson Junction
• Phases and collective modes of hardcore Bose-Fermi mixture in an optical lattice
• Interaction dependent temperature effects in Bose-Fermi mixtures in optical lattices
• Insulator phases of a mixture of spinor fermions and hard-core bosons
• Mixture of scalar bosons and two-color fermions in one dimension: Superfluid-insulator transitions
• Counterflow superfluid of polaron pairs in Bose-Fermi mixtures in optical lattices
• Mixture of Tonks-Girardeau gas and Fermi gas in one-dimensional optical lattices
• Spin-selective insulators in Bose-Fermi mixtures
• Renormalization group approach to spinor Bose-Fermi mixtures in a shallow optical lattice
• Momentum reconstruction and contact of the one-dimensional Bose-Fermi mixture
• Using off-diagonal confinement as a cooling method
• Insulator phases of Bose-Fermi mixtures induced by intraspecies next-neighbor interactions