PHYSICS 221B · PHYS 221BQuantum Mechanics
Physics · 4 units · Graduate courses (200-299)
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.
Requisites
Official UCLA wording
Requisite: course 221A.
BruinTree reads · Prerequisite
confidence 1.00 · from textRequires
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 230AQuantum Field Theory
- PHYSICS 241ASolid-State Physics
- PHYSICS 242AAdvanced Solid-State Theory
- PHYSICS 242BAdvanced Solid-State Theory
- PHYSICS 242CTopology of Condensed Matter
- PHYSICS 226AElementary Particle Physics
- PHYSICS 226DBeyond the Standard Model
- PHYSICS 291Research Tutorial: Elementary Particle Theory
- PHYSICS 226BElementary Particle Physics
- PHYSICS 226CElementary Particle Physics
- PHYSICS 226EParticle Astrophysics: Exploring Earliest and Extreme Universe
- PHYSICS 230DQuantum Field Theory
- PHYSICS 237AString Theory
- PHYSICS 237BString Theory
7 courses list this as a requisite. Showing 25 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.