Quantum Mechanics

• Preliminary
  • Quantum Vocabulary
  • Quantum Questions
    • Wedge Product, Cross Prodcut & Commutation relation
  • Tensors and Groups in Quantum
    • Wigner-Eckart Theorem
• Quantum Mechanics Beginners
  • Fundamental Concepts
    • What’re the most important tricks in QM calculations?
    • First Three Postulates
    • Position and Momentum Space
  • Quantum in 1D
    • General
  • Parity
    • Passive and Active Transformations
    • Parity
  • Classical Limit of QM
    • Ehrenfest’s Theorem
    • Picture
    • Conservation
  • Harmonic Oscillators
    • Why Harmonic Oscillators
    • Standard Solution
    • Tricky Solution
    • Semiclassical
• Quantum Mechanics Intermediates
  • Tensor Product Space
  • Density Matrix
  • Angular Momentum
    • Angular Momentum
• Quantum Mechanics Advanced
  • Symmetries in QM
    • Time and Space Translation
    • Gauge Symmetry
    • Parity
  • Quantum Approximation Methods
    • Variational Method
    • Variational Method and Virial Theorem
    • WKB
  • Super-Symmetric Quantum Mechanics