Non-universal Efimov Atom-Dimer Resonances in a Three-Component Mixture of 6Li

Details Non-universal Efimov Atom-Dimer Resonances in a Three-Component Mixture of 6Li Non-universal Efimov Atom-Dimer Resonances in a Three-Component Mixture of 6Li

2010-03-09

arxiv.org/abs/1003.1800v1

Phys. Rev. Lett. 105, 023201 (2010)

Physics

Condensed Matter

Quantum Gases

5 pages, 3 figures

Scientific paper

We observed an enhanced atom-dimer relaxation due to the existence of Efimov states in a three-component mixture of 6Li atoms. We measured the magnetic-field dependence of the atom-dimer loss coefficient in the mixture of atoms in state |1> and dimers formed in states |2> and |3>, and found two peaks corresponding to the degeneracy points of the |23> dimer energy level and energy levels of Efimov trimers. We found that the locations of these peaks disagree with universal theory predictions, in a way that cannot be explained by non-universal two-body properties. We constructed theoretical models that characterize the non-universal three-body physics of three-component 6Li atoms in the low energy domain.

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