Evidence for an excited-state efimov trimer in a three-component fermi gas

J. R. Williams, E. L. Hazlett, J. H. Huckans, R. W. Stites, Y. Zhang, K. M. O'Hara

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Abstract

We observe enhanced three-body recombination in a three-component Li6 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 κ* and η* for the universal region above 600 G which includes three overlapping Feshbach resonances. The value of κ* also predicts the locations of loss features previously observed near 130 and 500 G 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.

Original languageEnglish (US)
Article number130404
JournalPhysical review letters
Volume103
Issue number13
DOIs
StatePublished - Sep 24 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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