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- W2017202213 abstract "Abstract Partial wave N D equations in potential scattering are solved for the exponential, Hulthen and Morse potentials. The driving terms are taken to be either the contributions of a finite number of Born terms or the total contributions of only the nearest singularities (first n poles). For repulsive potentials one observes ghosts, anomalous bound states or resonances if the order of approximation is small with respect to the potential strength. The origin and meaning of these unphysical phenomena are explained. For attractive potentials such anomalies occur only at very large potential strengths if at all. Input-equivalent Bargmann potentials are employed to determine the quality and nature of the approximate N D solutions. Rough criteria for the validity of approximations within the N D approach are formulated." @default.
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- W2017202213 date "1973-08-01" @default.
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- W2017202213 title "On the left-hand cut in potential scattering" @default.
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- W2017202213 doi "https://doi.org/10.1016/0003-4916(73)90091-2" @default.
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