Spectral properties and bound-state scattering for weakly coupled λP(?)2 models

We analyze the particle structure in weakly coupled λP(?)₂ models. Topics include existence of bound states and resonances, asymptotic expansions for bound-state masses, low-energy asymptotic completeness, and perturbation theory for scattering events involving bound states. The analysis is based on analyticity properties and perturbation theory for the Bethe-Salpeter kernel.