Abstract
A field-theoretic version of nonrelativistic, multichannel scattering theory is presented in which the particles interact via two-body potentials, which can include both long-range (Coulomb, etc.) and short-range potentials. By utilizing known first-quantized results, in and out fields and interpolating fields are constructed both for simple and composite particles, and an asymptotic condition using strong convergence is proved. Complexities present when long-range potentials are involved are discussed.
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