Molecular superfluid phase in one-dimensional multicomponent fermionic cold atoms

ORAL

Abstract

We study a simple model of $N$-component fermions with contact interactions which describes fermionic atoms with $N = 2F + 1$ hyperfine states loaded into a one-dimensional optical lattice. We show by means of analytical and numerical approaches that, for attractive interaction, a quasi-long-range molecular superfluid phase emerges at low density. In such a phase, the pairing instability is strongly suppressed and the leading instability is formed from bound-states made of $N$ fermions.

*support of the NSF under grant DMR-0605444.

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Authors

  • Guillaume Roux

    • LPT, IRSAMC, CNRS, Universite Paul Sabatier, Toulouse, France and Institut fur theoretische Physik C, RWTH Aachen

  • Sylvain Capponi

    • Laboratoire de Physique Theorique, Universite Paul Sabatier, CNRS - Toulouse, France
    • LPT, IRSAMC, CNRS, Universite Paul Sabatier, Toulouse, France

  • Philippe Lecheminant

    • LPTM, Universite de Cergy-Pontoise, CNRS, France

  • Patrick Azaria

    • LPTMC, Universite Pierre et Marie Curie, CNRS, Paris, France

  • Edouard Boulat

    • LMPQ, Universite Paris Diderot - Paris 7, CNRS, France

  • Steven R. White

    • Department of Physics and Astronomy, University of California, Irvine, USA