L3.2 Degeneracy resolved to first order; state and energy corrections

L3.3 Degeneracy resolved to second order

First order corrections to energy and wavefunctions - Perturbation Theory (Time indep. non degen)

L3.4 Degeneracy resolved to second order (continued)

L2.3 Degenerate Perturbation theory: Example and setup

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What If You Keep Slowing Down?

L9.3 Example: Instantaneous transitions in a two-level system

L3.1 Remarks on a 'good basis'

L1.1 General problem. Non-degenerate perturbation theory

L4.4 Dirac equation for the electron and hydrogen Hamiltonian

Цепи Маркова — математика предсказаний [Veritasium]

L2.4 Degenerate Perturbation Theory: Leading energy corrections

L9.1 The interaction picture and time evolution

Deriving 1st Order Perturbation Theory (Energy and Wavefunction Corrections)

L1.2 Setting up the perturbative equations

Perturbation Theory in Quantum Mechanics - Cheat Sheet

L10.2 Transitions with a constant perturbation

Может ли у ИИ появиться сознание? — Семихатов, Анохин

L6.5 Semiclassical approximation and local de Broglie wavelength