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- W2017454921 abstract "This paper investigates approximate solutions for the few-body multichannel reaction problem. In the context of the three-body scattering problem, we extend the cluster expansion formalism that is based on the Karlsson-Zeiger integral equations. The decoupling scheme developed by Boll'e and Kuzmichev is modified to extract the elastic channel optical potential. The utility and rate of convergence of the cluster expansion is tested in a model three-boson problem. The interactions for the model problem are chosen to include elastic, inelastic, and rearrangement channels. It is found that only a few terms of the cluster expansion are needed to reproduce the exact three-body solutions and that cusp singularity effects which appear in the phase shift at channel thresholds are accounted for accurately.NUCLEAR REACTIONS Three-body problem. Cluster representations. Optical potential. Threshold singularities. Approximation methods." @default.
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- W2017454921 date "1981-12-01" @default.
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- W2017454921 title "Cluster expansion, multichannel scattering, and the optical potential" @default.
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- W2017454921 doi "https://doi.org/10.1103/physrevc.24.2409" @default.
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