FIELD THEORIES 2 MODELO PARTICULA-HUECO 2 NUCLEAR THEORY 2 PARTICLE-HOLE MODEL TEORIA NUCLEAR 2 Applications of the nuclear field theory to monopole interactions wich include all the vertices of a general force 1 FERMIONES 1 INTERACCIONES DE PARIDAD 1 MONOPOLES 1 PAIRING INTERACTIONS 1 PARTICLES 1 PAULI PRINCIPLE 1 PHONONS 1 PRINCIPIO DE PAULI 1 TEORIAS CAMPO 1 TERORIAS DE CAMPO 1 The nuclear field treatment of some exactly soluble models 1