Retardation Effects and Virtual Annihilation Interactions in Relativistic Three-body Systems

摘要

The Hamiltonian formalism of quantum field theory and the variational methods in a reformulated model have been used to investigate the influence of retardation effects or virtual annihilation interactions in relativistic three-body wave equations for scalar two particles and one antiparticle interacting via a massive or massless mediating scalar field. The results show that the inclusion of virtual annihilation interactions or retardation effects can have noticeable consequence on the three-body binding energy at strong coupling.