Efimov states embedded in the three-body continuum

Date
Authors
Mehta, N. P.
Rittenhouse, Seth T.
D'Incao, J. P.
Greene, Chris H.
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
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.
Comment: 4 pages 3 figures
Keywords
Condensed Matter - Other Condensed Matter
Citation
Collections