Radio Frequency Association of Efimov Trimers

Abstract

The quantum-mechanical three-body problem is one of the fundamental challenges of few-body physics. When the two-body interactions become resonant, an infinite series of universal three-body bound states is predicted to occur, whose properties are determined by the strength of the two-body interactions. We report on the association and direct observation of a trimer state consisting of three distinguishable fermions using radio-frequency (RF) spectroscopy. The measurements of its binding energy are consistent with theoretical predictions which include non-universal corrections.

12 pages, 6 figures

References in corpus (9)

• Observation of Phase Separation in a Strongly-Interacting Imbalanced Fermi Gas
• Observation of an Efimov spectrum in an atomic system
• Collisional stability of a three-component degenerate Fermi gas
• Three-body recombination in a three-state Fermi gas with widely tunable interactions
• Observation of universality in ultracold 7Li three-body recombination
• Observation of an Efimov-like resonance in ultracold atom-dimer scattering
• Evidence for Universal Four-Body States Tied to an Efimov Trimer
• Observation of heteronuclear atomic Efimov resonances
• Atom-Dimer Scattering in a Three-Component Fermi Gas

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• Atom-Dimer Scattering and Stability of Bose and Fermi Mixtures
• Observation of photoassociation resonances in ultracold atom-molecule collisions
• Finite Range Effects in Energies and Recombination Rates of Three Identical Bosons
• Multichannel effects in the Efimov regime from broad to narrow Feshbach resonances
• Three-body crossover from a Cooper triple to bound trimer state in three-component Fermi gases near a triatomic resonance
• Reshaped Three-Body Interactions and the Observation of an Efimov State in the Continuum
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• Three in Many: Efimov physics in the presence of a Fermi sea
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• Efimov physics and universal trimer in spin-orbit coupled ultracold atomic mixtures
• Van der Waals universality in homonuclear atom-dimer elastic collisions
• Observation of Anomalous Decay of a Polarized Three-Component Fermi Gas
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• Low temperature scattering with the R-matrix method: argon-argon scattering
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• Universality of Efimov states in highly mass-imbalanced cold-atom mixtures with van der Waals and dipole interactions
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• Universal Efimov Scaling in the Rabi-Coupled Few-Body Spectrum
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• Hybrid-pair superfluidity in a strongly driven Fermi gas
• Efimov energy level rebounding off the atom-dimer continuum
• Bound-like State in a 1D Self-Similar Delta-Barrier Array
• Stabilization of three-body resonances to bound states in a continuum
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• Density effects on the interferometry of Efimov states by modulating magnetic fields
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• Three-body recombination near the d-wave resonance in ultracold ${}^{85}$Rb\,-${}^{87}$Rb mixtures