Approximation Methods
A 12-module path through approximation methods, in study order from foundations to the frontier.
Modules
- Why Molecular Schrödinger Equations Are Unsolvable Exactly
- The Born-Oppenheimer Approximation
- Potential Energy Surfaces from Electronic Energy
- The Variational Principle
- The Variational Method with Trial Functions
- Optimizing Nonlinear Variational Parameters
- Linear Variation and the Secular Equations
- Overlap and Hamiltonian Matrix Elements
- Solving the Secular Determinant
- First-Order Perturbation Theory
- Second-Order Perturbation Theory
- Degenerate Perturbation Theory