Evidence for an Excited-State Efimov Trimer in a Three-Component Fermi Gas

Journal Article · Fri Sep 25 04:00:00 EDT 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.130404· OSTI ID:21370686

Williams, J R; Hazlett, E L; Huckans, J H; Stites, R W; Zhang, Y; O'Hara, K M ^[1]

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1. Department of Physics, Pennsylvania State University, University Park, Pennsylvania 16802-6300 (United States)

We observe enhanced three-body recombination in a three-component {sup 6}Li 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{sub *} and eta{sub *} for the universal region above 600 G which includes three overlapping Feshbach resonances. The value of kappa{sub *} 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.

• OSTI ID: 21370686
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 103; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
APPROXIMATIONS
CALCULATION METHODS
ENERGY LEVELS
EXCITED STATES
FERMI GAS
GROUND STATES
ISOTOPES
LIGHT NUCLEI
LITHIUM 6
LITHIUM ISOTOPES
MANY-BODY PROBLEM
NUCLEI
ODD-ODD NUCLEI
RECOMBINATION
RESONANCE
STABLE ISOTOPES
THREE-BODY PROBLEM