Strongly correlated Fermi-Bose mixtures in disordered optical lattices release_eel6erauazc4beadqjv544ec6a

by L. Sanchez-Palencia, V. Ahufinger, A. Kantian, Jakub Zakrzewski, A. Sanpera, M. Lewenstein

Released as a article .

2005  

Abstract

We investigate theoretically the low-temperature physics of a two-component ultracold mixture of bosons and fermions in disordered optical lattices. We focus on the strongly correlated regime. We show that, under specific conditions, composite fermions, made of one fermion plus one bosonic hole, form. The composite picture is used to derive an effective Hamiltonian whose parameters can be controlled via the boson-boson and the boson-fermion interactions, the tunneling terms and the inhomogeneities. We finally investigate the quantum phase diagram of the composite fermions and we show that it corresponds to the formation of Fermi glasses, spin glasses, and quantum percolation regimes.
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Type  article
Stage   submitted
Date   2005-11-30
Version   v1
Language   en ?
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