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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…
quant-ph2016
A regularized Lagrange-mesh method based on an orthonormal Lagrange-Laguerre basis
Jérémy Dohet-Eraly
The Lagrange-mesh method is an approximate variational approach having the form of a mesh calculation because of the use of a Gauss quadrature. Although this method provides accura…