Study of Efimov physics in two nuclear-spin sublevels of 7Li

Abstract

Efimov physics in two nuclear-spin sublevels of bosonic lithium is studied and it is shown that the positions and widths of recombination minima and Efimov resonances are identical for both states within the experimental errors which indicates that the short-range physics is nuclear-spin independent. We also find that the Efimov features are universally related across Feshbach resonances. These results crucially depend on careful mapping between the scattering length and the applied magnetic field which we achieve by characterization of the two broad Feshbach resonances in the different states by means of rf-spectroscopy of weakly bound molecules. By fitting the binding energies numerically with a coupled channels calculation we precisely determine the absolute positions of the Feshbach resonances and the values of the singlet and triplet scattering lengths.

15 pages, 7 figures

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Cited by in corpus (51)

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• Lifetime of the Bose Gas with Resonant Interactions
• Finite range corrections near a Feshbach resonance and their role in the Efimov effect
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• Contrasting the wide Feshbach resonances in ${}^6$Li and ${}^7$Li
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• Connecting few-body inelastic decay to many-body correlations: a weakly coupled impurity in a resonant Fermi gas
• $N$-boson spectrum from a Discrete Scale Invariance
• Three-body recombination in heteronuclear mixtures at finite temperature
• Analytical model of overlapping Feshbach resonances
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• Bose-Hubbard physics in synthetic dimensions from interaction Trotterization
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• Multichannel effects in the Efimov regime from broad to narrow Feshbach resonances
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• Reshaped Three-Body Interactions and the Observation of an Efimov State in the Continuum
• A coherent superposition of Feshbach dimers and Efimov trimers
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• Many Bosons in a Narrow Magnetic Feshbach Resonance
• Two- and three-body problem with Floquet-driven zero-range interactions
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• Accurate simulation of Efimov physics in ultracold atomic gases with realistic three-body multichannel interactions
• Relativistic Borromean States
• Photoassociation of Universal Efimov Trimers
• Characterization of Feshbach resonances in ${}^6\mathrm{Li}{-}^7\mathrm{Li}$ using improved interaction potentials
• Shallow Trimers of Two Identical Fermions and One Particle in Resonant Regimes