2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/94964We 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.10 pagesHigh Energy Physics - Theorytext