David Skinner: Supersymmetry

This is the site for the Part III course on Supersymmetry, offered to MASt students in Maths at Cambridge. The notes here are in progress and will be updated as the course proceeds. It's likely that they'll contain somewhat more than we'll have time to cover in the lectures.


  • Introduction:   PDF File
    Preliminaries. What is Supersymmetry? Path Integrals in Quantum Field Theory.
  • Supersymmetry in Zero Dimensions:   PDF File
    Fermions and Super Vector Spaces. Berezin Integration. Examples of Gaussian Integrals for Fermions. Supersymmetry and Localization. Landau-Ginzburg Theories and the Chiral Ring.
  • Supersymmetric Quantum Mechanics:   PDF File
    SQM with a Potential. Supersymmetric Ground States and the Witten Index. The Path Integral Approach to Quantum Mechanics. Nonlinear Sigma Models. The Witten Index of a NLSM. The Atiyah-Singer Index Theorem.
  • Supersymmetric Quantum Field Theory:   PDF File
    Dirac spinors in two dimensions. Superspace and Superfields. Chiral Superfields. Supersymmetric Actions in d=2. The Wess-Zumino Model. U(1) Axial and Vector Symmetries. The Vacuum Moduli Space. Seiberg Non-Renormalization Theorems.
  • Nonlinear Sigma Models:   PDF File
    Kahler Manifolds as Complex Manifolds with a compatible Symplectic Structure. Supersymmetric NLSM on a Kahler Manifold. Anomalies in R-Symmetries. The Beta Function of a NLSM.

Problem Sheets

Recommended Books

The main book for the course is Mirror Symmetry by K. Hori. C. Vafa et al. You can download a pdf copy of the book from the Clay Maths Institute site. We'll mostly be looking at chapters 8-16.