Mixture of bosonic and spin-polarized fermionic atoms in an optical lattice

Abstract

We investigate the properties of trapped Bose-Fermi mixtures for experimentally relevant parameters in one dimension. The effect of the attractive Bose-Fermi interaction onto the bosons is to deepen the parabolic trapping potential, and to reduce the bosonic repulsion in higher order, leading to an increase in bosonic coherence. The opposite effect was observed in ${}^{87}$Rb - ${}^{40}$K experiments, most likely due to a sharp rise in temperature. We also discuss low-temperature features, such as a bosonic Mott insulator transition driven by the fermion concentration, and the formation of composite particles such as polarons and molecules.

4 pages, 5 figures

References in corpus (6)

• Bose-Fermi Mixtures in a Three-dimensional Optical Lattice
• Localization of bosonic atoms by fermionic impurities in a 3d optical lattice
• Mixtures of Bosonic and Fermionic Atoms in Optical Lattices
• Instabilities in binary mixtures of one-dimensional quantum degenerate gases
• Tuning of heteronuclear interactions in a quantum-degenerate Fermi-Bose mixture
• Spatial correlations of trapped 1d bosons in an optical lattice

Cited by in corpus (25)

• Non-standard Hubbard models in optical lattices: a review
• Few-body Bose gases in low dimensions -- a laboratory for quantum dynamics
• Self-Trapping of Bosons and Fermions in Optical Lattices
• Exact solution of the Bose Hubbard model with unidirectional hopping
• Do mixtures of bosonic and fermionic atoms adiabatically heat up in optical lattices?
• Supersolidity of cold-atom Bose-Fermi mixtures in optical lattices
• Finite-Temperature Auxiliary-Field Quantum Monte Carlo for Bose-Fermi Mixtures
• Quantum-entanglement aspects of polaron systems
• Superfluid and Mott Insulator phases of one-dimensional Bose-Fermi mixtures
• Generalized Dynamical Mean-Field Theory for Bose-Fermi Mixtures in Optical Lattices
• Condensed phase of Bose-Fermi mixtures with a pairing interaction
• Superfluid-insulator transition in Fermi-Bose mixtures and the orthogonality catastrophe
• Effect of interactions on harmonically confined Bose-Fermi mixtures in optical lattices
• Loss of superfluidity by fermions in the boson Hubbard model on an optical lattice
• Competition of superfluidity and density waves in one-dimensional Bose-Fermi mixtures
• Binding between two-component bosons in one dimension
• Supersolid-Superfluid phase separation in the extended Bose-Hubbard model
• Effects of a dilute gas of fermions on the superfluid-insulator phase diagram of the Bose-Hubbard model
• Boson Hubbard model with weakly coupled Fermions
• Quantum Monte Carlo simulation of three-dimensional Bose-Fermi mixtures
• Heteronuclear quantum gas mixtures
• Boson-fermion pairing and condensation in two-dimensional Bose-Fermi mixtures
• Competing instabilities at long length scales in the one-dimensional Bose-Fermi-Hubbard model at commensurate fillings
• Correlation Effects in a Trapped Bose-Fermi Mixture: Exact Results
• Mechanical stability of resonant Bose-Fermi mixtures