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Letter
Nature Physics 5, 417–421 (1 June 2009) | doi:10.1038/nphys1253
Signatures of universal four-body phenomena and their relation to the Efimov effect
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Abstract
The problem of three interacting quantal bodies, in its various guises, seems deceptively simple, but it has also provided striking surprises, such as the Efimov effect, which was confirmed experimentally only more than 35 years after its initial prediction. The importance of understanding the three-body problem was magnified by the explosion of ultracold science following the formation of Bose–Einstein condensates in 1995 (ref.|[nbsp]|4).
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