Disordered ultracold atomic gases in optical lattices : a case study of Fermi-Bose mixtures
Ahufinger, Verònica (Universitat Autònoma de Barcelona. Departament de Física)
Sánchez Palencia, L. (University of Hannover. Institute of Theoretical Physics)
Kantian, A. (University of Hannover. Institute of Theoretical Physics)
Sanpera Trigueros, Anna (Universitat Autònoma de Barcelona. Departament de Física)
Lewenstein, Maciej (University of Hannover. Institute of Theoretical Physics)
American Physical Society

Data:	2005
Resum:	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.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Publicat a:	Physical review. A, Vol. 72, Issue 6 (December 2005) , p. 063616-1-063616-25, ISSN 1050-2947

DOI: 10.1103/PhysRevA.72.063616

25 p, 976.0 KB

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