2ND QUANTIZATION APPROACH TO COMPOSITE HADRON INTERACTIONS IN QUARK MODELS

Starting from the Fock space representation of hadron bound states in a quark model, a change of representation is implemented by a unitary transformation such that the composite hadrons are redescribed by elem entary-particle field operators. Application of the unitary transforma tion to the microscopic quark Hamiltonian gives rise to effective hadr on-hadron, hadron-quark, and quark-quark Hamiltonians. An effective ba ryon Hamiltonian is derived using a simple quark model. The baryon Ham iltonian is free of the post-prior discrepancy which usually plagues c omposite-particle effective interactions.