Class Notes for PHY31: Supersymmetry, Grand Unification, and String Theory
The Theoretical Minimum Class Series
Professor Leonard Susskind
Renormalization, dimensional analysis, application to QFT and the fine-tuning or mass hierarchy problem, vacuum renormalization and gravity
Rotations by 2 and 4pi, fermion and boson contributions to vacuum renormalization, effect of Supersymmetry
Propagators for different particle types, analyzed from an dimensional analysis point of view.
Properties of symmetry operators, transforming between fermions and bosons, Grassmann numbers
A simple example of Supersymmetry
Vacuum, some Cosmology, more machinery for Supersymmetry
Creating Lagrangians that preserve Supersymmetry.
Extending to 4 dimensional space-time, the generated QFT and Feynman diagrams.
Supersymmetry breaking. GUTs - SU(5)
GUT multiplets, Proton Decay