Renormalized Quantum Field Theory [Paperback]

I. Elements of Quantum Field Theory.- 1. Quantum Free Fields.- 1.1. Fock Space.- 1.2. Free Real Scalar Field.- 1.3. Other Free Fields.- 2. The Chronological Products of Local Monomials of the Free Field.- 2.1. Wick Theorem.- 2.2. Wick Theorem for Chronological Products of Free Fields.- 2.3. Regularized T-Products.- 2.4. Ambiguity in the Choice of Chronological Products.- 3. Interacting Fields.- 3.1. Interpolating Heisenberg Field.- 3.2. Connection Between Two Systems of Axioms.- 3.3. T-Exponential, Lagrangian, Renormalization Constants.- 3.4. Green Functions, Functional Integral, Euclidean Quantum Field Theory.- 3.5. Interaction Lagrangians.- II. Parametric Representations for Feynman Diagrams. R-Operation.- 1. Regularized Feynman Diagrams.- 1.1. Intermediate Regularization. Divergency Index.- 1.2. Parametric Representation for Regularized Diagrams.- 1.3. The Proof of Statements (16)(21).- 1.4. Parametric Representations in Other Dimensions and in Euclidean Theory. Coordinate Representation.- 2. Bogoliubov-Parasiuk R-Operation.- 2.1. Subtraction Operators M and Finite Renormalization Operators P. Definition of R-Operation.- 2.2. The Structure of the R-Operation.- 2.3. R-Operation with Non-Zero Subtraction Points or Other Subtraction Operators.- 3. Parametric Representations for Renormalized Diagrams.- 3.1. Renormalization over Forests.- 3.2. Non-Zero Subtraction Points.- 3.3. Renormalization over Nests.- 3.4. Renormalization by Means of Integral Operators.- III. Bogoliubov-Parasiuk Theorem. Other Renormalization Schemes.- 1. Existence of Renormalized Feynman Amplitudes.- 1.1. Division of the Integration Domain into Sectors. The Equivalence Classes of Nests.- 1.2. The Ultraviolet Convergence of Parametric Integrals.- 1.3. The Limit ? ? 0.- 2. Infrared Divergencies and Renormalization in Massless Theories.- 2.1. Infrared Convergence of Regularized Amplitudes.- 2.2. Illustrations and Heuristic Arguments.- 2.3. Classification of Theories.- 2.4. Ultraviolet Renormalizatls>