“Know how to solve every problem that has been solved.”“What I cannot create, I do not understand.”— Richard Feynman
Project 3 — The core Hamiltonian
Quantum Chemistry
The one-electron physics, complete: kinetic energy and nuclear attraction, contracted into the
2×2 core Hamiltonian. This is where your Boys function earns its keep — and where the most
common real-world bug (forgetting the other nucleus) is waiting for you.