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Phase diagram of Bose-Fermi mixtures in one-dimensional optical lattices
Lode Pollet1, Matthias Troyer, Kris Van Houcke
1Institut Theoretische Physik, ETH Zürich, Switzerland.
Abstract:
The ground state phase diagram of the one-dimensional Bose-Fermi Hubbard model is studied in the canonical ensemble using a quantum Monte Carlo method. We focus on the case where both species have half filling in order to maximize the pairing correlations between the bosons and the fermions. In case of equal hopping we distinguish among phase separation, a Luttinger liquid phase, and a phase characterized by strong singlet pairing between the species. True long-range density waves exist with unequal hopping amplitudes.
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