Phys. Rev. Lett. 94, 210401 (2005) [4 pages]Confinement Induced Molecules in a 1D Fermi GasReceived 8 March 2005; published 3 June 2005 We have observed two-particle bound states of atoms confined in a one-dimensional matter waveguide. 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. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.210401
DOI:
10.1103/PhysRevLett.94.210401
PACS:
03.75.Ss, 05.30.Fk, 34.50.-s, 71.10.Pm
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