2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/196234We derive a new kind of recursion relation to obtain the one-particle-irreducible (1PI) Feynman diagrams for the effective action. By using this method, we have obtained the graphical representation of the four-loop effective action in case of the general bosonic field theory which have vertices higher than the four-point vertex.High Energy Physics - Theorytext