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quant-ph2025
-matrix type parametrization of the Jost function for extracting the resonance parameters from scattering data
P. Vaandrager, M. L. Lekala, S. A. Rakityansky
A new method is proposed for fitting non-relativistic binary-scattering data and for extracting the parameters of possible quantum resonances in the compound system that is formed…
quant-ph2023
The Jost function and Siegert pseudostates from R-matrix calculations at complex wavenumbers
Paul Vaandrager, Jérémy Dohet-Eraly, Jean-Marc Sparenberg
The single-channel Jost function is calculated with the computational R-matrix on a Lagrange-Jacobi mesh, in order to study its behaviour at complex wavenumbers. Three potentials d…