Contents

• Drude Theory
  • Model
  • Consequences
  • Failures
• Sommerfeld Theory
  • Model
  • Theory
  • Consequences
  • Failures
• Independent Electron Model
  • Model
  • Theory
  • Consequences
    • Diffraction by a Lattice
    • Bloch Theory
    • Bethe-Sommerfeld conjecture
    • Physical Results
  • Failures
    • Failures of the Static Lattice Model
    • Failures of the Independent Electron Model
• Dynamic Lattice Model
  • Model
  • Harmonic Approximation
  • Classical Theory of the Harmonic Crystal
  • Quantum Theory of the Harmonic Crystal
• Electron-Electron Interaction
  • Model
  • Failures
• Electron-Phonon Interaction
  • Interacting Electrons and Phonons
  • Born-Oppenheimer Approximation
  • Failures of the Born-Oppenheimer Approximation
  • Effective Electron-Electron Interaction
• References
• About this document ...