Superfluid Fermi gas in a 1D optical lattice

G. Orso 1, G. V. Shlyapnikov 2, 3

Physical Review Letters 95 (2005) 260402

We calculate the superfluid transition temperature for a two-component 3D Fermi gas in a 1D tight optical lattice and discuss a dimensional crossover from the 3D to quasi-2D regime. For the geometry of finite size discs in the 1D lattice, we find that even for a large number of atoms per disc, the critical effective tunneling rate for a quantum transition to the Mott insulator state can be large compared to the loss rate caused by three-body recombination. This allows the observation of the Mott transition, in contrast to the case of Bose-condensed gases in the same geometry.

  • 1. BEC-INFM and Dipartimento di Fisica,
  • 2. Laboratoire de Physique Théorique et Modèles Statistiques (LPTMS),
    CNRS : UMR8626 – Université Paris XI - Paris Sud
  • 3. Van der Waals-Zeeman Institute,
    University of Amsterdam