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PHYSICS 115A · PHYS 115AQuantum Mechanics

Physics · 4 units · Undergraduate upper division (100-199)

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Classical background. Basic ideas of quantum nature of light, wave-particle duality, Heisenberg uncertainty principle, Schrödinger equation. One-dimensional square well and harmonic oscillator problems. One-dimensional scattering, Formal theory, Hilbert spaces, and Dirac notation.

P/NP or letter grading.

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Requisites

Official UCLA wording

Requisites: courses 17, 32, 105A.

BruinTree reads · Prerequisite

confidence 1.00 · from text
all of
  • PHYSICS 17
  • PHYSICS 32
  • PHYSICS 105A

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Requires

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

PHYSICS 115A

  • PHYSICS 17Modern Physics
    • PHYSICS 1APhysics for Scientists and Engineers: Mechanics
      • MATH 31ADifferential and Integral Calculus1 more beneath
      • MATH 31BIntegration and Infinite Seriesanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)
      • MATH 31ADifferential and Integral Calculusanother path to it
      • MATH 31BIntegration and Infinite Seriesanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
      • MATH 31BIntegration and Infinite Seriesanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 1BHPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fields (Honors)
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
      • PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)another path to it
      • MATH 31BIntegration and Infinite Seriesanother path to it
    • PHYSICS 1CPhysics for Scientists and Engineers: Electrodynamics, Optics, and Special Relativity
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
      • PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fieldsanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 1CHPhysics for Scientists and Engineers: Electrodynamics, Optics, and Special Relativity (Honors)
      • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
      • PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)another path to it
      • MATH 32ACalculus of Several Variablesanother path to it
    • PHYSICS 32Mathematical Methodsanother path to it
  • PHYSICS 32Mathematical Methods
    • PHYSICS 1APhysics for Scientists and Engineers: Mechanicsanother path to it
    • PHYSICS 1AHPhysics for Scientists and Engineers: Mechanics (Honors)another path to it
    • MATH 32ACalculus of Several Variables
      • MATH 31ADifferential and Integral Calculusanother path to it
    • PHYSICS 1BPhysics for Scientists and Engineers: Oscillations, Waves, Electric and Magnetic Fieldsanother path to it
    • MATH 32BCalculus of Several Variables
      • MATH 31BIntegration and Infinite Seriesanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
    • MATH 33ALinear Algebra and Applications
      • MATH 3BCalculus for Life Sciences Students1 more beneath
      • MATH 31BIntegration and Infinite Seriesanother path to it
      • MATH 32ACalculus of Several Variablesanother path to it
  • PHYSICS 105AAnalytic Mechanics
    • PHYSICS 32Mathematical Methodsanother path to it
    • MATH 33BDifferential Equations
      • MATH 31BIntegration and Infinite Series

3 direct requisites. Showing 43 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

Unlocks

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

PHYSICS 115A

  • PHYSICS 112Thermal Physics
    • PHYSICS 140AIntroduction to Solid-State Physics
      • PHYSICS 241ASolid-State Physicsanother path to it
    • PHYSICS 140BQuantum States of Matteranother path to it
    • EPS SCI 200AIntroduction to Geophysics and Space Physics I: Solid Earth and Planets
      • EPS SCI 228Introduction to Planetary Dynamos
    • PHYSICS 144Polymer Physics
    • PHYSICS 170NComputational Physics and Astronomy Laboratory
    • EPS SCI 200BIntroduction to Geophysics and Space Physics II: Oceans and Atmospheres
      • EPS SCI 228Introduction to Planetary Dynamosanother path to it
    • EPS SCI 200CIntroduction to Geophysics and Space Physics III: Plasmas —Aeronomy and Interplanetary Medium
      • EPS SCI 228Introduction to Planetary Dynamosanother path to it
      • EPS SCI 240Space Plasma Physics
    • EPS SCI 211Mathematical Methods of Geophysics
  • PHYSICS 115BQuantum Mechanics
    • PHYSICS 112Thermal Physicsanother path to it
    • PHYSICS 115CQuantum Mechanics
      • PHYSICS 123Atomic Structure
      • PHYSICS 124Nuclear Physics
      • PHYSICS 126Elementary Particle Physics
      • PHYSICS 180QQuantum Optics Laboratory
      • PHYSICS 245Quantum Computationanother path to it
    • ASTR 145High-Energy Astrophysicsanother path to it
    • PHYSICS 128Cosmology and Particle Astrophysicsanother path to it
    • CHEM C115BAdvanced Quantum Chemistry with Laboratory II
      • CHEM C115CAdvanced Quantum Chemistry: Applications
    • PHYSICS 180FElementary Particle Laboratory
    • CHEM C215BAdvanced Quantum Chemistry with Laboratory II
      • PHYSICS M215DNonequilibrium Statistical Mechanics and Molecular Biophysics
      • CHEM C215CAdvanced Quantum Chemistry: Applications
      • CHEM M223CNonequilibrium Statistical Mechanics and Molecular Biophysics
  • ASTR 145High-Energy Astrophysics
  • PHYSICS 128Cosmology and Particle Astrophysics
  • PHYSICS 140BQuantum States of Matter
    • PHYSICS 241ASolid-State Physics
      • PHYSICS 241BSolid State Physics1 more beyond
      • PHYSICS 242AAdvanced Solid-State Theory
      • PHYSICS 242BAdvanced Solid-State Theory
      • PHYSICS 242CTopology of Condensed Matter
  • CHEM M120Soft Matter Laboratory
  • PHYSICS 150Physics of Charged-Particle and Laser Beams
  • PHYSICS M180GSoft Matter Laboratory
  • PHYSICS C187ABiological Physics I: Life at Rest
    • PHYSICS C187BBiological Physics II: Life in Motionanother path to it
  • PHYSICS C187BBiological Physics II: Life in Motion
  • PHYSICS 235Quantum Simulation for Physics
  • PHYSICS 245Quantum Computation
    • QNT SCI 402Quantum Information
      • QNT SCI 403Theory of Quantum Devicesanother path to it
    • QNT SCI 403Theory of Quantum Devices
    • QNT SCI 420Satellite Quantum Networking
  • PHYSICS C287ABiological Physics I: Life at Rest
    • PHYSICS C287BBiological Physics II: Life in Motionanother path to it
  • PHYSICS C287BBiological Physics II: Life in Motion

14 courses list this as a requisite. Showing 54 courses over 3 levels; the branches marked with a count carry on past it. Every course here opens its own tree.

  • Fall 2025
  • Spring 2026
  • Fall 2026
  • Spring 2027

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