Journals of the American Physical Society - Boson-fermion pairing in Bose-Fermi mixtures on one-dimensional optical lattices

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November 2007, to be published in Physical Review A

Boson-fermion pairing in Bose-Fermi mixtures on one-dimensional optical lattices
X. Barillier-Pertuisel, S. Pittel, L. Pollet, and P. Schuck

Boson-fermion pairing is considered in a discrete environment of bosons and fully spin-polarized fermions, coupled via an attractive Bose-Fermi Hubbard Hamiltonian in one dimension. The results of the T-matrix approximation for particles of equal mass and at double half filling are compared with the results of exact diagonalization and with Quantum Monte Carlo results. Satisfactory agreement for most quantities is found. The appearance of a stable, weak-coupling pairing mode is also confirmed.

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