Journal
PHYSICAL REVIEW LETTERS
Volume 103, Issue 13, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.130404
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Funding
- AFOSR [FA9550-08-1-0069]
- ARO [W911NF-06-1-0398]
- NSF [PHY 07-01443]
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We observe enhanced three-body recombination in a three-component Li-6 Fermi gas attributable to an excited Efimov trimer state intersecting the three-atom scattering threshold near 895 G. From measurements of the recombination rate we determine the Efimov parameters kappa(*) and eta(*) for the universal region above 600 G which includes three overlapping Feshbach resonances. The value of kappa(*) also predicts the locations of loss features previously observed near 130 and 500 G [T.B. Ottenstein et al., Phys. Rev. Lett. 101, 203202 (2008); J.H. Huckans et al., Phys. Rev. Lett. 102, 165302 (2009)] suggesting they are associated with a ground-state Efimov trimer near threshold. We also report on the realization of a degenerate three-component Fermi gas with approximate SU(3) symmetry.
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