Quantization of Fields with Infinite‐Dimensional Invariance Groups. III. Generalized Schwinger‐Feynman Theory

摘要: The formal methods of Schwinger and Feynman are applied to nonlinear field theories having elementary vertex functions arbitrarily high order. In the first half paper, familiar theorems rederived by noncanonical methods. Emphasis is given purely aspects theory which may be expected survive generalization situations in standard asymptotic conditions inapplicable. Since context nonlinearities assumed appear that a non‐Abelian infinite‐dimensional invariance group, detailed attention question group invariant measure for functional integral. It shown physically important part not determined group.The second paper devoted propagators correlation characterize system when variables introduced. existence c‐number action Γ contains complete description all quan...