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arXiv · 1103.2107

Shallow Efimov tetramer as inelastic virtual state and resonant enhancement of the atom-trimer relaxation

A. Deltuva
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Abstract

We use exact four-boson scattering equations in the momentum-space framework to study the universal properties of shallow Efimov tetramers and their dependence on the two-boson scattering length. We demonstrate that, in contrast to previous predictions, the shallow tetramer in a particular experimentally unexplored regime is not an unstable bound state but an inelastic virtual state. This leads to a resonant behaviour of the atom-trimer scattering length and thereby to a resonant enhancement of the trimer relaxation in ultracold atom-trimer mixtures.

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A. Deltuva. 2011-08-22. Shallow Efimov tetramer as inelastic virtual state and resonant enhancement of the atom-trimer relaxation. https://doi.org/10.1209/0295-5075%2F95%2F43002

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