Experimental study of the BEC-BCS crossover region in lithium 6 |
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| Authors: | Bourdel T Khaykovich L Cubizolles J Zhang J Chevy F Teichmann M Tarruell L Kokkelmans S J J M F Salomon C |
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| Institution: | Laboratoire Kastler-Brossel, ENS, 24 rue Lhomond, 75005 Paris. |
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| Abstract: | We report Bose-Einstein condensation of weakly bound 6Li2 molecules in a crossed optical trap near a Feshbach resonance. We measure a molecule-molecule scattering length of 170(+100)(-60) nm at 770 G, in good agreement with theory. We study the 2D expansion of the cloud and show deviation from hydrodynamic behavior in the BEC-BCS crossover region. |
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