Equivalence of Many-Photon Green Functions in DKP and KGF Statistical Quantum Field Theories
V.Ya. Fainberg, B. M. Pimentel, J. S. Valverde · LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) · 2003
We prove the equivalence of many-photon Green functions in statistical quantum field Duffin-Kemmer-Petiau (DKP) and Klein-Gordon-Fock (KGF) theories using functional path integral formalism for partition functional in statistical quantum (finite temperature) field theory. We also calculate the polarization operators in these theories in one-loop approximation, and demonstrate their coincidence.