Three-body recombination at finite energy within an optical model

Abstract

We investigate three-boson recombination of equal mass systems as function of (negative) scattering length, mass, finite energy, and finite temperature. An optical model with an imaginary potential at short distance reproduces experimental recombination data and allows us to provide a simple parametrization of the recombination rate as function of scattering length and energy. Using the two-body van der Waals length as unit we find that the imaginary potential range and also the potential depth agree to within thirty percent for Lithium and Cesium atoms. As opposed to recent studies suggesting universality of the threshold for bound state formation, our results suggest that the recombination process itself could have universal features.

5 pages, 5 figures

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Cited by in corpus (9)

• Van der Waals universality near a quantum tricritical point
• Three-body recombination of two-component cold atomic gases into deep dimers in an optical model
• Few-body Physics in a Many-body World
• Temperature dependence of an Efimov resonance in ${}^{39}\mathrm{K}$
• Efimov states in Li-Cs mixtures within a minimal model
• Spectral flow of trimer states of two heavy impurities and one light condensed boson
• Analytic expression for three-body recombination rates into deep dimers
• Window for Efimov physics for few-body systems with finite-range interactions
• Finite-range bias in fitting three-body loss to the zero-range model