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Abstract
A formulation of the Kowalski-Noyes representation of the t-matrix is developed using Weinberg's quasiparticle formalism. Such a representation leads to non-singular integral equations for the t-matrix. It also suggests a separable approximation to the t-matrix, which reduces the Faddeev equations to coupled equations in one continuous variable. This separable approximation satisfies the off-shell unitarity relation, and has the corre behavior in the neighborhood of bound-state and resonance energies. The formulation given allows for a treatment of tensor forces.
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