Disordered ultracold atomic gases in optical lattices: A case study of Fermi-Bose mixtures

TitleDisordered ultracold atomic gases in optical lattices: A case study of Fermi-Bose mixtures
Publication TypeJournal Article
Year of Publication2005
AuthorsAhufinger, V, Sanchez-Palencia, L, Kantian, A, Sanpera, A, Lewenstein, M
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Volume72
Issue6
Pagination063616
Date Published12/2005
ISSN1050-2947
Abstract

We present a review of properties of ultracold atomic Fermi-Bose mixtures in inhomogeneous and random optical lattices. In the strong interacting limit and at very low temperatures, fermions form, together with bosons or bosonic holes, composite fermions. Composite fermions behave as a spinless interacting Fermi gas, and in the presence of local disorder they interact via random couplings and feel effective random local potential. This opens a wide variety of possibilities of realizing various kinds of ultracold quantum disordered systems. In this paper we review these possibilities, discuss the accessible quantum disordered phases, and methods for their detection. The discussed quantum phases include Fermi glasses, quantum spin glasses, “dirty” superfluids, disordered metallic phases, and phases involving quantum percolation.

URLhttp://link.aps.org/doi/10.1103/PhysRevA.72.063616
DOI10.1103/PhysRevA.72.063616
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