Lecture
This lecture covers the Ehrenfest Theorem, which relates quantum mechanics to classical mechanics by examining the time evolution of expectation values. It discusses the harmonic oscillator dynamics in the Heisenberg picture, eigenvalues, eigenvectors, and energy levels. The lecture also delves into stationary states, initial conditions, and the Schrödinger equation. Various examples and mathematical derivations are provided to illustrate the application of the Ehrenfest Theorem.