Quantum Field Theory: Lecture Log

This is the lecture log for the Quantum Field Theory classes PHY 396 K and PHY 396 L taught in 2026/27 by professor Vadim Kaplunovsky.

Most lectures should be video recorded and the records available on Canvas. For the few lectures that did not get recorded because of technical glitches, I shall scan the notes I have used in class and links the scans to this page.

Navigation: Fall, Spring, Last regular lecture.

QFT 1, Fall 2026 semester

August 25 (Tuesday):

Syllabus and admin: course content, textbooks, prerequisites, homework, exams and grades, etc.
General introduction: reasons for QFT; field-particle duality.
Lagrangian mechanics: Lagrangian and action; least action principle; Euler–Lagrange equations; multiple dynamical variables; counting the degrees of freedom.
Introduction to classical fields: Definition of a classical field; Lagrangian density; Euler–Lagrange equations for fields; Klein–Gordon example; multiple fields; complex fields; Landau–Ginzburg example.

QFT 2, Spring 2027 semester

Too early to plan.