Experimental Study of the BEC-BCS Crossover Region in Lithium 6
Résumé
We report Bose-Einstein condensation of weakly bound $^6$Li$_2$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 expansion of the cloud in the BEC-BCS crossoverregion.
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