About Quantum Field Theory Course (Lecture 1) by Suvrat Raju - 8th Jan 2024

Feynman Propagator Delta Function Singularities Interacting-Vacuum Green Functions and the S-Matrix via LSZ Reduction Localized Field Excitations and Causality, and Noether Currents in QFT Wilsonian Renormalization Group Flow in Quantum Field Theory Free Scalar Field Theory in Quantum Mechanics Quantum Field Theory Nucleon-Nucleon Potential via Yukawa Exchange in Non-Relativistic Limit Canonical Commutation Relations for Scalar Fields Crossing Symmetry and Mandelstam Variables in Quantum Field Theory Scattering Amplitudes S Matrix Calculation via Dyson Series in Quantum Field Theory Feynman Rules for Scalar Field Theory Quantum Field Theory Wick Theorem Vacuum Expectation Values Derivation Path Integral Derivation from Canonical Quantum Time Evolution LSZ Reduction Formula in Quantum Field Theory Ising Model Duality to Electromagnetism in Two-Dimensional Quantum Field Theory Path Integral Quantization of the Free Scalar Field and the Feynman Propagator Scalar Field One Loop Coupling Renormalization in Quantum Field Theory Symmetry and Conservation Laws in Mechanics Power Counting and Renormalizability Classes in Scalar Field Theory Feynman Diagrams for Scalar Field Theory Fock Space and the Schrödinger Representation of Quantum Fields Box Normalization and Flux in Deriving Differential Cross-Sections Canonical Quantization of Fields into Fock Space via Mode Operators Renormalization Scale Dependence and the Beta Function in Phi-4 Theory