PHYSICS 221B

Quantum Mechanics

Physics · 4 units · Graduate courses (200-299)

Open the requisite map View official UCLA course listing ↗Find on Bruinwalk ↗

Symmetries and conservation laws, perturbation theory, scattering theory. Special topics such as Berry's phase and related geometric and topological aspects.

Letter grading.

When it runs

Winter 2026
Winter 2027

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 221A.

BruinTree reads · Prerequisite

confidence 1.00 · from text

PHYSICS 221A

Requires

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

PHYSICS 221B

PHYSICS 221AQuantum Mechanics

1 direct requisite. The whole upstream is here — 1 course over 1 level. Every course here opens its own tree.

Unlocks

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

PHYSICS 221B

PHYSICS 221CQuantum Mechanics
- PHYSICS 226AElementary Particle Physicsanother path to it
- PHYSICS 226BElementary Particle Physicsanother path to it
- PHYSICS 226CElementary Particle Physicsanother path to it
- PHYSICS 230A