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September 23, 2023

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Description

Relativistic Quantum Mechanics. Instructor: Prof. Apoorva D. Patel, Department of Physics, IIT Bangalore. This course covers topics on relativistic quantum mechanics: Dirac and Klein-Gordon equations, Lorentz and Poincare groups, and Fundamental processes of Quantum Electrodynamics.

This is a course on relativistic quantum mechanics. Relativity, specifically special relativity, and quantum mechanics have been two very highly successful theories of our twentieth century. And what this subject amounts to is combining the two theories in a very successful manner and working out the predictions. Relativity essentially follows from the property that speed of light in vacuum is an invariant quantity. And mathematically, that is extended to the principle of the Lorentz transformations. Quantum mechanics tells that nature is discrete at a small scale and its formulation is based on unitary evolution of quantities known as wave functions or states. These two theories have been successful on their own. Relativistic quantum mechanics is just on the border line of merging relativity and quantum mechanics, and it offers many consequences as a result. This course will explore those consequences. (from nptel.ac.in)

Course Curriculum

    • Lecture 01 – Introduction, the Klein-Gordon Equation Unlimited
    • Lecture 02 – Particles and Antiparticles, Two Component Framework Unlimited
    • Lecture 03 – Coupling to Electromagnetism, Solution of the Coulomb Problem Unlimited
    • Lecture 04 – Bohr-Sommerfeld Semi Classical Solution of the Coulomb Problem, … Unlimited
    • Lecture 05 – Dirac Matrices, Covariant Form of the Dirac Equation, Equations of Motion, … Unlimited
    • Lecture 06 – Electromagnetic Interactions, Gyromagnetic Ratio, Lorentz Force, Larmor Precession Unlimited
    • Lecture 07 – The Hydrogen Atom Problem, Symmetries, Parity, Separation of Variables Unlimited
    • Lecture 08 – The Frobenius Method Solution, Energy Levels and Wavefunctions Unlimited
    • Lecture 09 – Non-relativistic Reduction, The Foldy-Wouthuysen Transformation Unlimited
    • Lecture 10 – Interpretation of Relativistic Corrections, Reflection from a Potential Barrier Unlimited
    • Lecture 11 – The Klein Paradox, Pair Creation Process and Examples Unlimited
    • Lecture 12 – Zitterbewegung, Hole Theory and Antiparticles Unlimited
    • Lecture 13 – Charge Conjugation Symmetry, Chirality, Projection Operators, The Weyl Equation Unlimited
    • Lecture 14 – Weyl and Majorana Representations of the Dirac Equation, Unitary and … Unlimited
    • Lecture 15 – Time Reversal Symmetry, The PCT Invariance Unlimited
    • Lecture 16 – Arrow of Time and Particle-antiparticle Asymmetry, Band Theory for Graphene Unlimited
    • Lecture 17 – Dirac Equation Structure of Low Energy Graphene States, Relativistic Signatures … Unlimited
    • Lecture 18 – Groups and Symmetries, the Lorentz and Poincare Groups Unlimited
    • Lecture 19 – Group Representations, Generators and Algebra, Translations, Rotations and Boosts Unlimited
    • Lecture 20 – The Spinor Representation of SL (2, C), The Spin-statistics Theorem Unlimited
    • Lecture 21 – Finite Dimensional Representations of the Lorentz Group, Euclidean and … Unlimited
    • Lecture 22 – Classification of One Particle States, The Little Group, Mass, Spin and Helicity Unlimited
    • Lecture 23 – Massive and Massless One Particle States Unlimited
    • Lecture 24 – P and T Transformations, Lorentz Covariance of Spinors Unlimited
    • Lecture 25 – Lorentz Group Classification of Dirac Operators, Orthogonality and … Unlimited
    • Lecture 26 – Propagator Theory, Non-relativistic Case and Causality Unlimited
    • Lecture 27 – Relativistic Case, Particle and Antiparticle Contributions, Feynman Prescription … Unlimited
    • Lecture 28 – Interactions and Formal Perturbative Theory, The S-matrix and Feynman Diagrams Unlimited
    • Lecture 29 – Trace Theorems for Products of Dirac Matrices Unlimited
    • Lecture 30 – Photons and the Gauge Symmetry Unlimited
    • Lecture 31 – Abelian Local Gauge Symmetry, the Covariant Derivative and Invariants Unlimited
    • Lecture 32 – Charge Quantization, Photon Propagator, Current Conservation and Polarizations Unlimited
    • Lecture 33 – Feynman Rules for Quantum Electrodynamics, Nature of the Perturbative Expansion Unlimited
    • Lecture 34 – Dyson’s Analysis of Perturbation Series, Singularities of the S-matrix, … Unlimited
    • Lecture 35 – The T-matrix, Coulomb Scattering Unlimited
    • Lecture 36 – Mott Cross-section, Compton Scattering Unlimited
    • Lecture 37 – Klein-Nishina Result for Cross-Section Unlimited
    • Lecture 38 – Photon Polarisation Sums, Pair Production through Annihilation Unlimited
    • Lecture 39 – Unpolarised and Polarised Cross-Sections Unlimited
    • Lecture 40 – Helicity Properties, Bound State Formation Unlimited
    • Lecture 41 – Bound State Decay, Non-relativistic Potentials Unlimited
    • Lecture 42 – Lagrangian Formulation of QED, Divergences in Green’s Functions, … Unlimited
    • Lecture 43 – Infrared Divergences due to Massless Particles, Renormalization and … Unlimited
    • Lecture 44 – Symmetry Constraints on Green’s Functions, Furry’s Theorem, … Unlimited
    • Lecture 45 – Status of QED, Organization of Perturbative Expansion, Precision Tests Unlimited

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