Evidence for an Excited-State Efimov Trimer in a Three-Component Fermi Gas
- 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, Vol. 103, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.103.130404; (c) 2009 The American Physical Society; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
APPROXIMATIONS
EXCITED STATES
FERMI GAS
GROUND STATES
LITHIUM 6
RECOMBINATION
RESONANCE
THREE-BODY PROBLEM
CALCULATION METHODS
ENERGY LEVELS
ISOTOPES
LIGHT NUCLEI
LITHIUM ISOTOPES
MANY-BODY PROBLEM
NUCLEI
ODD-ODD NUCLEI
STABLE ISOTOPES