6 Lectures on QFT, RG and SUSY

TL;DR

This paper provides an accessible introduction to the renormalization group in quantum field theories, emphasizing physical intuition, Wilsonian methods, and supersymmetric properties, based on a series of lectures for students.

Contribution

It offers a pedagogical overview connecting Wilsonian RG with traditional methods and explores unique features of supersymmetric theories in the RG framework.

Findings

Clarifies the physical interpretation of coupling running.

Relates Wilsonian RG to perturbative regularization techniques.

Highlights special properties of supersymmetric theories in RG context.

Abstract

An introduction to the theory of the renormalization group in the context of quantum field theories of relevance to particle physics is presented in the form of 6 lectures delivered to the British Universities Summer School in Theoretical Elementary Particle Physics (BUSSTEPP). Emphasis is placed on gaining a physical understand of the running of the couplings and the Wilsonian version of the renormalization group is related to conventional perturbative calculations with dimensional regularization and minimal subtraction. An introduction is given to some of the remarkable renormalization group properties of supersymmetric theories.