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Nature 392, 434-435 (2 April 1998) | doi:10.1038/33009
Bose-Einstein condensates: Superfluids mixing it up
Brett D. Esry1 & Chris H. Greene2
Imagine two fierce competitors tossed into a trap, locked in a struggle with each other for supremacy. The quantum-mechanical match is hardly fair: the first competitor, 50,000 hefty 87Rb atoms in a Bose-Einstein condensate (BEC), outweighs the second almost fourfold.
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