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Centre for Particle Theory

Quantum Electrodynamics

16 Lectures Dr F. Caola

The course will develop techniques for computing scattering processes at tree level and one-loop. The first part of the course builds on the Introductory Field Theory course and is concerned with the application of Feynman rules to elementary scattering processes. The second part introduces Bremsstrahlung and loop corrections and describes how to handle the infrared and ultraviolet divergences that are present.

Outline of the course

QED at tree level: Application of Feynman rules for tree-level processes in QED, Dirac algebra, polarisation sums, unpolarised cross sections, crossing symmetry.
QED at one loop: UV singularities, dimensional regularization, techniques for evaluation of one-loop integrals, renormalization, Lamb shift, g-2, Ward identities, IR singularities.

Books for the course

M. E. Peskin and D. V. Schroeder, An Introduction to QFT (Addison Wesley, 1994)
M. Kaku, Quantum Field Theory: A Modern Introduction, (Oxford University Press Inc., 1994)
C. Itzykson and J. B. Zuber, Quantum Field Theory (McGraw-Hill, 1980)