J-matrix method of scattering in any L2 basis

Details J-matrix method of scattering in any L2 basis J-matrix method of scattering in any L2 basis

2001-12-06

arxiv.org/abs/physics/0112016v1

Phys. Rev. A 64, 042703 (2001)

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevA.64.042703

The restriction imposed on the J-matrix method of using specific L2 bases is lifted without compromising any of the advantages that it offers. This opens the door to a wider range of application of the method to physical problems beyond the restrictive SO(2,1) dynamical symmetry. The numerical scheme developed to achieve this objective projects the J-matrix formalism in terms of the eigenvalues of a finite Hamiltonian matrix and its submatrices in any convenient L2 basis. Numerical stability and convergence of the original analytic J-matrix method is still maintained in the proposed scheme, which can be applied to multi-channel nonrelativistic as well as relativistic scattering problems.

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