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 interspecies 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.
Original language | English (US) |
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Article number | 033619 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 78 |
Issue number | 3 |
DOIs | |
State | Published - Sep 26 2008 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics