Equivalence of Many-Photon Green Functions in DKP and KGF Statistical Quantum Field Theories

V. Ya. Fainberg, B. M. Pimentel, J. S. Valverde

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…