Confinement induced molecules in a 1D Fermi gas

Abstract

We have observed two-particle bound states of atoms confined in a one-dimensional matter wave guide. These bound states exist irrespective of the sign of the scattering length, contrary to the situation in free space. Using radio-frequency spectroscopy we have measured the binding energy of these dimers as a function of the scattering length and confinement and find good agreement with theory. The strongly interacting one-dimensional Fermi gas which we create in an optical lattice represents a realization of a tunable Luttinger liquid.

4 pages

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• Traces of integrability in scattering of one-dimensional dimers on a barrier
• Adiabatic cooling of a tunable Bose-Fermi mixture in an optical lattice
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• Aspects of Superfluid Cold Atomic Gases in Optical Lattices
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