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      Observation of universality in ultracold 7Li three-body recombination

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          Abstract

          We report on experimental evidence of universality in ultracold 7Li atoms' three-body recombination loss in the vicinity of a Feshbach resonance. We observe a recombination minimum and an Efimov resonance in regions of positive and negative scattering lengths, respectively, which are connected through the pole of the Feshbach resonance. Both observed features lie deeply within the range of validity of the universal theory and we find that the relations between their properties, i.e. widths and locations, are in an excellent agreement with the theoretical predictions.

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          Author and article information

          Journal
          25 June 2009
          2009-10-13
          Article
          10.1103/PhysRevLett.103.163202
          0906.4731

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

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          Phys. Rev. Lett. 103, 163202 (2009)
          5 pages, 2 figures
          cond-mat.other

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