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

Journal Article · Thu Dec 15 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.72.0· OSTI ID:20786353

Ahufinger, V ^[1]; Sanchez-Palencia, L ^[2]; Kantian, A ^[2]; Sanpera, A ^[2]; Lewenstein, M ^[2]

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1. Grup d'Optica, Departament de Fisica, Universitat Autonoma de Barcelona, E-08193 Belaterra, Barcelona (Spain)
2. Institut fuer Theoretische Physik, Universitaet Hannover, D-30167 Hannover (Germany)

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.

• OSTI ID: 20786353
• Journal Information: Physical Review. A, Vol. 72, Issue 6; Other Information: DOI: 10.1103/PhysRevA.72.063616; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
36 MATERIALS SCIENCE
BOSONS
FERMI GAS
FERMIONS
GASES
GLASS
HOLES
MIXTURES
POTENTIALS
RANDOMNESS
REVIEWS
SPIN GLASS STATE
SUPERFLUIDITY