Multimagnon scattering in the ferromagnetic XXX-model with inhomogeneities

摘要

We determine the transition amplitude for multimagnon scattering induced through an inhomogeneous distribution of the coupling constant in the ferromagnetic XXX-model. The two- and three-particle amplitudes are explicitly calculated at small momenta. This suggests a rather plausible conjecture also for a formula of the general n-particle amplitude. [References: 20]