Summary
We give a preliminary, formal approach to nonpotential scattering theory, which leans in an essential way on the Lie-isotopic algebraic structure. In the time-dependent case, the central result is an equation for the isotopic evolution operator which may be solved by a generalization of Magnus’ expansion. In the time-independent formalism, we obtain a purely algebraic isotopic version of Lippmann-Schwinger equations for the Møller operators and of the Born series.
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Mignani, R. Lie-isotopic algebraic approach to formal nonpotential scattering theory. Lett. Nuovo Cimento 43, 355–362 (1985). https://doi.org/10.1007/BF02746966
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DOI: https://doi.org/10.1007/BF02746966