Permanently Bound Quarks-New Solutions to Old Field Equations

Abstract

A class of relativistic-field-theoretic models of permanently bound quarks are shown to exhibit new and unconventional properties. They display crossing symmetry, but their Green's functions have an infinite array of singularities in momentum space and are singular everywhere in coordinate space. Nevertheless, these models are consistent quantum field theories that describe a system of interacting bound states which can decay into one another but not into quarks.