FFLO vs Bose-Fermi mixture in a two channel model of a 1D Fermi gas: a 3-body study

ORAL

Abstract

We study three fermions with a 1D two-channel model of a Feshbach resonance in order to gain insight into how the FFLO-like state at small negative scattering lengths evolves into a Bose-Fermi mixutre at small positive scattering lengths. The FFLO state possesses an oscillating superfluid correlation function, while in a Bose-Fermi mixture the correlations are monotonic. This behavior is is already present at the 3-body level. We present an exact study of the 3-body problem, and compare the results to scalable quantum Monte-Carlo calculations.

*Supported under ARO Award W911NF-07-1-0464 with funds from the DARPA OLE program.

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Authors

  • Stefan Baur

    • Laboratory for Atomic and Solid State Physics, Cornell University
    • Cornell University
    • Laboratory of Atomic and Solid State Physics, Cornell University

  • John Shumway

    • Department of Physics, Arizona State University and Laboratory for Atomic and Solid State Physics, Cornell University

  • Erich Mueller

    • Laboratory for Atomic and Solid State Physics, Cornell University