Radio-Frequency Association of Efimov Trimers

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Science  12 Nov 2010:
Vol. 330, Issue 6006, pp. 940-944
DOI: 10.1126/science.1193148

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The quantum mechanical three-body problem is one of the fundamental challenges of few-body physics. When the two-body interactions become resonant, an infinite series of universal three-body bound states is predicted to occur, whose properties are determined by the strength of the two-body interactions. We used radio-frequency fields to associate Efimov trimers consisting of three distinguishable fermions. The measurements of their binding energy are consistent with theoretical predictions that include nonuniversal corrections.

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