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

V. Ya. Fainberg·B. M. Pimentel·J. S. Valverde
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Abstract

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.

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V. Ya. Fainberg, B. M. Pimentel, J. S. Valverde. 2003-10-07. Equivalence of Many-Photon Green Functions in DKP and KGF Statistical Quantum Field Theories. https://arxiv.org/abs/hep-th/0309078

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