New Calculations of Recombination Rates for Cold $^4$He Atoms and Determination of Universal Scaling Functions

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dc.creatorShepard, J. R.
dc.date2007-02-12
dc.date2007-05-24
dc.date.accessioned2026-07-07T12:37:43Z
dc.date.available2026-07-07T12:37:43Z
dc.descriptionThree-body recombination rates for cold $^4$He are calculated with a new method which exploits the simple relationship between the imaginary part of the atom-dimer elastic scattering phase shift and the $S$-matrix for recombination. The elastic phase shifts are computed above breakup threshold by solving a three-body Faddeev equation in momentum space with inputs based on a variety of modern atom-atom potentials. Recombination coefficients for the HFD-B3-FCII potential agree very well with the only previously published results. Since the elastic scattering and recombination processes for $^4$He are governed by "Efimov physics", they depend on universal functions of a scaling variable. The newly computed recombination coefficients for potentials other than HFD-B3-FCII make it possible to determine these universal functions for the first time.
dc.description15 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0702290
dc.identifierhttp://arxiv.org/abs/cond-mat/0702290
dc.identifierPhys.Rev.A75:062713,2007
dc.identifierdoi:10.1103/PhysRevA.75.062713
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/218535
dc.subjectOther Condensed Matter
dc.subjectNuclear Theory
dc.subjectAtomic Physics
dc.titleNew Calculations of Recombination Rates for Cold $^4$He Atoms and Determination of Universal Scaling Functions
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