Physics 215B, QFT, Winter 2022: Lecture Notes and Handouts

Lecture Notes
Painstakingly-edited typeset lecture notes (recommended)
Hastily-scribbled lecture notes Lecture recording Subject
from lecture 01 lecture 01 recording Goals, parable on violation of scale invariance by QM
from lecture 02 lecture 02 recording Beta function; a simple example of perturbative renormalization
from lecture 03 lecture 03 recording First steps towards quantum corrections to the Coulomb force law
from lecture 04 lecture 04 recording Electron self energy; self-energy in phi^4 theory
from lecture 05 lecture 05 recording Where is the cutoff dependence?
from lecture 06 lecture 06 recording QED vertex correction
from lecture 07 lecture 07 recording Soft photons
from lecture 08 lecture 08 recording Vacuum polarization
from lecture 09 lecture 09 recording Spectral density
from lecture 10 lecture 10 recording Optical theorem and cutting rules
from lecture 11 lecture 11 recording Hadrons with perturbative QCD; Parable on integrating out heavy modes
from lecture 12 lecture 12 recording Anderson-Higgs mechanism
from lecture 13 lecture 13 recording Interlude on differential forms
from lecture 14 lecture 14 recording Gauge fields as connections; fermion path integrals
from lecture 15 lecture 15 recording Lattice gauge theory
from lecture 16 lecture 16 recording Gauge fixing
from lecture 17 lecture 17 recording The QCD beta function
from lecture 18 lecture 18 recording Wilsonian RG, briefly
from lecture 19 lecture 19 recording Renormalization of composite operators; Callan-Symanzik equation; Introductory words about Effective Field Theory
from lecture 20 lecture 20 recording The color of the sky; loops in effective field theory; the Standard Model as an effective field theory
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