Advanced Quantum Field Theory (QFTII)

Organizational details

• M.Sc. Physics specialization course
• Course organization on PhU for registered students ( PhU link)

Plenary tutorials

Tutorial plan

1. Thursday, 18 April 2024, (2:15 PM - 4:00 PM)
   

   • Organizational matters
   • What is ‘High Energy Physics’?,
   • Energy scales in QFT (UV vs IR)
   • Idea behind Effective Field Theories (EFTs) using three quick examples : $\lambda \phi^4$, gravity as a QFT, and QCD
   • A brief idea on what does it mean for a theory to be “renormalizable”
   • Importance of non-renormalizable theories

   Notes
   

2. Thursday, 25 April 2024, (2:15 PM - 4:00 PM)
   

   • What is renormalization? (The idea of dressed particles)
   • Connection between renormalization and the spectral density function

   Notes
   Supplementary material (A detailed worked out version of first 6-7 pages of Chapter 7 of Peskin & Schroeder)
   

3. Thursday, 2 May 2024, (2:15 PM - 4:00 PM)
   

   • Buildup for renormalizing $\lambda \phi^4$
   • Systemics of renormalization (Skipped for now!)
   • Renormalizing $\lambda \phi^4$

   Notes

4. Thursday, 16 May 2024, (2:15 PM - 4:00 PM)

   • How interactions change the propagator in perturbation theory (1PI diagrams)
   • Role of counterterms (Renormalization conditions)
   • Vertex function

   Notes - Chapter 33 of QFT for the Gifted Amatuer
   

5. Thursday, 23 May 2024, (2:15 PM - 4:00 PM)

   • A summary of renormalized QED

   Notes - Part 1, Notes - Part 2, Notes - Supplementary part 2
   

6. Thursday, 07 June 2024, (2:15 PM - 4:00 PM)
   

   • Faddeev Popov gauge fixing technique for QED (Abelian theory)

   Notes

Tutorial 6 is the last tutorial until any further notice!