Tuesday, 13:30 - 15:10

Friday, 11:40 - 13:20

All lectures over zoom:

Meeting ID: 838 5551 8730

Passcode: 044834

link to the zoom meeting

To be determined

Quantum Field Theory by Peskin and Schroder

And/Or Srednicki (which you can download free from that page!)

NOTE that these two books use different conventions!

Therefore I am giving you a few helpful extra readings, which I will put here:

a PDF document reviewing group theory and representation theory

a PDF document reviewing the Lorentz group and its representations (Dirac algebra)

a PDF document summarizing how to jump back and forth between metric (and other) conventions

- What is field theory; scalar theory
- Path integrals and generating functionals
- Interactions and Feynman diagrams
- Spinors and Dirac equation
- Scattering in QED
- Loops and renormalization

All homeworks will appear here as they are needed. Solutions have now been taken down.

- Homework 1, due 30 April 2021,
- Homework 2, due 14 May 2021,
- Homework 3, due 28 May 2021,
- Homework 4, due 11 June 2021,
- Homework 5, due 25 June 2021,
- Homework 6, due 9 July 2021,
- Homework 7,
due 23 July 2021,
It's harder but it's all extra credit.

Date | Topic | Reading | Notes | Recording |

13 April | What is QFT? | Peskin Ch. 1 Srednicki Preface |
notes, transparencies | lecture 1 |

16 April | Classical scalar fields | Peskin 2.1 Srednicki 1, 2, 3 |
notes 2, transparencies | lecture 2 |

20 April | Classical Nöther Theorem | Peskin 2.2 Srednicki 22 (just skim it) |
notes 3 transparencies | lecture 3 |

23 April | Spacetime symmetries | Peskin 2.2 Srednicki 2 |
notes 3, First half of this review transparencies |
lecture 4 |

27 April | Free scalar field | Peskin 2.3 Srednicki 3, 4 |
notes 4 transparencies | lecture 5 |

30 April | Particles, wave packets | Peskin 2.4 Srednicki 5 |
notes 5 transparencies | lecture 6 |

4 May | Lehmann representation, particles | Peskin 2.4, half of 7.1 Srednicki 5, 13 |
notes 6 transparencies | lecture 7 |

7 May | Setting up scattering | Peskin 7.2,
Pages
from Lowell Brown's book Srednicki 10, 11 |
notes 7 transparencies | lecture 8 |

11 May | The S-matrix, LSZ reduction | Peskin 4.5 and 7.2 Srednicki 10, 11 |
notes 8 transparencies | lecture 9 |

14 May | Path integrals 1 | Peskin 9.1 Srednicki 6, 7, 8 |
notes 9 transparencies | lecture 10 |

18 May | Path integrals, Pert. Thy | Peskin 9.2, 9.3 Srednicki 9 |
notes 10 and notes 11 transparencies | lecture 11 |

21 May | Tree-level Scattering | Peskin 4.1 to 4.6 Srednicki 10 |
notes 12 transparencies | lecture 12 |

25 May | Disconnected and loop diagrams | Peskin 4.1 to 4.6 | notes 13 transparencies | lecture 13 |

28 May | Lorentz group generators | Peskin 3.1 Srednicki 33 |
notes 14 transparencies | lecture 14 |

1 June | Lorentz group representations | Peskin 3.1, 3.2 Srednicki 34 |
notes 15 transparencies | lecture 15 |

4 June | Dirac equation, Gamma matrices | Peskin 3.1 to 3.4 Srednicki 34, 35 |
notes 16 transparencies | recording is two files |

8 June | Dirac equation, Gamma matrices | Peskin 3.1 to 3.4 Srednicki 34, 35 |
notes 16 transparencies | lecture 17 |

11 June | Wave and hydrogenic solutions | Peskin 3.1 to 3.4 | notes 17 transparencies | lecture 18 |

15 June | Quantizing Dirac | Peskin 3.5 Srednicki 36-39 |
notes 18 transparencies | lecture 19 |

18 June | Fermionic Path Integral | Peskin 9.5 Srednicki 41, 42, 43 |
notes 19 transparencies | lecture 20 |

22 June | External state fermions; Signs and Fermions | Peskin 4.7, 9.5 Srednicki 45, 46, 47 |
notes 20 transparencies | lecture 21 |

25 June | Continuous symmetries again | Peskin 9.6 |
notes 21 transparencies | lecture 22 |

29 June | Gauge invariance, photon propagator | Peskin 4.8, 9.4 Srednicki 54-58 |
notes 22 transparencies | lecture 23 |

2 July | Calculating: trace methods | Peskin 5.1 to 5.3 Srednicki 46-48 |
notes 23 transparencies | lecture 24 |

6 July | Calculating: interference, crossing | Peskin 5.4, 5.5 Srednicki 48 |
notes 24 transparencies | lecture 25 |

9 July | Higher-order: IR, collinear | Peskin 6.1, 6.2 (Missing in Srednicki) |
notes 25 transparencies | lecture 26 |

13 July | Higher-order: Renormalization | Peskin 7.1 Srednicki 16-18, 62 |
notes 25 transparencies | lecture 27 |

16 July | Vertex, Self-energy, Ward-Takehashi | Peskin 6.2 to 6.4, 7.4, 9.6 Srednicki 62, 63, 67,68 |
notes 26 notes 27 transparencies | lecture 28 |

If requested!! | Electron g-2 | Peskin 6.3 Srednicki 64 |
notes 28 |