Quantum Field Theory: Loop Corrections and Counter Terms

This lecture delves into the intricacies of loop corrections and counter terms in quantum field theory. The instructor explains how divergences arise in loop calculations, leading to the need for counter terms to renormalize the theory. By analyzing various integrals and diagrams, the lecture demonstrates how to handle divergences and extract meaningful predictions from loop calculations. The normalization group is highlighted as a powerful tool to determine higher-order corrections based on lower-order results, ensuring consistency and predictability in quantum field theory.