Efimov states embedded in the three-body continuum
arXiv:0801.2002 · doi:10.1103/PhysRevA.78.020701
Abstract
We consider a multichannel generalization of the Fermi pseudopotential to model low-energy atom-atom interactions near a magnetically tunable Feshbach resonance, and calculate the adiabatic hyperspherical potential curves for a system of three such interacting atoms. In particular, our model suggests the existence of a series of quasi-bound Efimov states attached to excited three-body thresholds, far above open channel collision energies. We discuss the conditions under which such states may be supported, and identify which interaction parameters limit the lifetime of these states. We speculate that it may be possible to observe these states using spectroscopic methods, perhaps allowing for the measurement of multiple Efimov resonances for the first time.
4 pages 3 figures
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- Ultracold three-body collisions near narrow Feshbach resonances
- Complex contact interaction for systems with short-range two-body loss
- Three-body Physics in Strongly Correlated Spinor Condensates
- Three component fermion pairing in two dimensions
- Few-body physics of ultracold atoms and molecules with long-range interactions
- Three-body recombination rates near a Feshbach resonance within a two-channel contact interaction model
- Three-body rf association of Efimov trimers
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