PHYSICS 230B

Quantum Field Theory

Physics · 6 units · Graduate courses (200-299)

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Perturbative methods for quantization of interacting quantum field theories. Topics include functional methods in scalar field theory, perturbation theory for scalar field theory, Feynman rules, UV regularization and renormalization, perturbation theory for quantum electro-dynamics (QED), Ward identities, renormalization of QED, and anomalies in QED.

S/U or letter grading.

When it runs

Fall 2025
Fall 2026

Scheduled, not typical — from UCLA’s Schedule of Classes, which publishes Fall 2025 through Spring 2027 and nothing before it.

Checking the Schedule of Classes…

Requisites

Official UCLA wording
Requisite: course 230A.

BruinTree reads · Prerequisite

confidence 1.00 · from text

PHYSICS 230A

Requires

Everything that has to come before this course, not just the courses named in the requisite above.

PHYSICS 230B

PHYSICS 230AQuantum Field Theory
- PHYSICS 221CQuantum Mechanics
  - PHYSICS 221AQuantum Mechanics
  - PHYSICS 221BQuantum Mechanics

1 direct requisite. The whole upstream is here — 4 courses over 3 levels. Every course here opens its own tree.

Unlocks

What this course is a requisite for, and what those courses lead to in turn.

PHYSICS 230B

PHYSICS 226AElementary Particle Physics
- PHYSICS 226DBeyond the Standard Modelanother path to it
- PHYSICS 291Research Tutorial: Elementary Particle Theoryanother path to it
PHYSICS 226BElementary Particle Physics
- PHYSICS 226DBeyond the Standard Model