Bose Einstein Condensation of ⁶Li₂ Molecules and the BEC-BCS Crossover
Dr. Johannes Denschlag (Universität Innsbruck)

We report on the Bose-Einstein condensation of more than 10⁵ Li₂ molecules in an optical trap starting from a spin mixture of fermionic lithium atoms [1].
During forced evaporative cooling, the molecules are formed by three-body recombination near a Feshbach resonance and finally condense in a long-lived thermal equilibrium state. The pure molecular condensate is then used to investigate the BEC-BCS crossover with various methods [2-4].</div>

<div>References:</div>
[1] S. Jochim et al., Science 302, 2103 (2003); Published online 13 November 2003; 10.1126/science.1093280 <div>[2] M. Bartenstein et al., Phys. Rev. Lett. 92, 120401 (2004).</div>

<div>[3] M. Bartenstein et al., Phys. Rev. Lett. 92, 203201 (2004).</div>

<div>[4] C. Chin et al., Science (2004); Published online 22 July 2004;</div> </div>