The increasing precision of experimental data in many areas of elementary particle physics requires an equally precise theoretical description. In particular, radiative corrections (described by one- and multi-loop Feynman diagrams) have to be considered. Although a growing number of physicists are involved in such projects, multi-loop calculation methods can only be studied from original publications. With its coverage of multi-loop calculations, this book serves as an excellent supplement to the standard textbooks on quantum field theory. Based around postgraduate-level lectures given by the author, the material is suitable for both beginners and graduate students.

Contents:

• QED and QCD:
• One-Loop Diagrams
• QED at One Loop
• QCD at One Loop
• Two-Loop Corrections in QED and QCD
• On-Shell Renormalization Scheme
• Decoupling of Heavy-Particle Loops
• Conclusion: Effective Field Theories
• Multiloop Calculations:
• Massless Propagator Diagrams
• HQET Propagator Diagrams
• Massive On-Shell Propagator Diagrams
• Hypergeometric Functions and Multiple ζ Values