Approaching universality in weakly bound three-body systems.

@article{Roudnev2012ApproachingUI,
  title={Approaching universality in weakly bound three-body systems.},
  author={V. Roudnev and M. Cavagnero},
  journal={Physical review letters},
  year={2012},
  volume={108 11},
  pages={
          110402
        }
}
Atom-dimer scattering below the three-body breakup threshold is studied for a system of three identical bosons. The atom-dimer scattering length and the energy of the most weakly bound three-body state are shown to be strongly correlated. An appropriate rescaling of the observables reveals the subtlety of the correlation and serves to identify universal trends in the unitary limit of divergent two-body scattering length. The correlation provides a new quantitative measure of the degree of… Expand
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