Abstract
A brief account of the scattering theory using the so called distortion operator is given. The Neumann series for a matrix element of the distortion operator is proved to imply the [N, 1] Padé sequence for the transition matrix element. As a consequence a region of convergence of the [N, 1] Padé sequence is found.
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Michalík, B. Distortion operator approach and [N, 1] Padé sequence in nonrelativistic scattering theory. Czech J Phys 21, 591–603 (1971). https://doi.org/10.1007/BF01726432
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DOI: https://doi.org/10.1007/BF01726432