“Know how to solve every problem that has been solved.” “What I cannot create, I do not understand.” — Richard Feynman

Project 7 — MP2: buying back correlation

Quantum Chemistry

The rebuild is done — now go past it. Your SCF's mean field misses the electrons' instantaneous dodge; one transformed integral and one division recover the leading piece of it. This is post-Hartree-Fock chemistry, written by you.