Experimental Study of the BEC-BCS Crossover Region in Lithium 6

C. Salomon; F. Chevy; J Cubizolles; J. Zhang; L. Khaykovich; L. Tarruell; M. Teichmann; S.J.J.M.F. Kokkelmans; T. Bourdel

arxiv: cond-mat/0403091 · v3 · submitted 2004-03-02 · ❄️ cond-mat.stat-mech · cond-mat.other

Experimental Study of the BEC-BCS Crossover Region in Lithium 6

T. Bourdel , L. Khaykovich , J Cubizolles , J. Zhang , F. Chevy , M. Teichmann , L. Tarruell , S.J.J.M.F. Kokkelmans

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C. Salomon

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classification ❄️ cond-mat.stat-mech cond-mat.other

keywords bec-bcsagreementbose-einsteinboundcloudcondensationcrossedcrossover

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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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Experimental Study of the BEC-BCS Crossover Region in Lithium 6

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