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8.323 Relativistic Quantum Field Theory I

8.323 Relativistic Quantum Field Theory I (Spring 2023, MIT OCW). Instructor: Prof. Hong Liu. This course is a one-term self-contained subject in quantum field theory. Concepts and basic techniques are developed through applications in elementary particle physics and condensed matter physics. (from ocw.mit.edu)

Lecture 23 - Cross Section and Decay Rate

Derivation of relativistic cross section, center of mass frame and relevant kinematics, decay rate.

Go to the Course Home or watch other lectures:

Lecture 01 - Classical Field Theories and Principle of Locality

Lecture 02 - Symmetries and Conservation Laws

Lecture 03 - Why Quantum Field Theory

Lecture 04 - Canonical Quantization of a Free Scalar Field Theory

Lecture 05 - Complex Scalar Field Theory and Anti-Particle

Lecture 06 - Propagators and Green Functions

Lecture 07 - Interacting Theories and S-Matrix

Lecture 08 - Path Integral Formalism for Non-Relativistic Quantum Mechanics

Lecture 09 - Path Integral Formalism for QFT; Computation of Time-Ordered Correlation Functions

Lecture 10 - Time-Ordered Correlation Functions in Field Theory

Lecture 11 - Computation of Correlation Functions in Perturbation Theory and Feynman Diagrams

Lecture 12 - More on Perturbation Theory and Feynman Diagrams

Lecture 13 - Introduction the Dirac Equation

Lecture 14 - Lorentz Covariance of the Dirac Equation

Lecture 15 - Classical Solutions of Dirac Equations

Lecture 16 - Quantization of the Dirac Theory

Lecture 17 - Chiral and Majorana Spinors

Lecture 18 - Discrete Symmetries

Lecture 19 - Path Integrals of Fermions

Lecture 20 - Maxwell Theory and its Canonical Quantization

Lecture 21 - Quantum Maxwell Theory (cont.)

Lecture 22 - Quantum Electrodynamics

Lecture 23 - Cross Section and Decay Rate

Lecture 24 - Elementary Processes in QED (I)

Lecture 25 - Elementary Processes in QED (II)

Lecture 26 - Quantum Fluctuations and Renormalization