The Hartree-Fock (HF) method is a fundamental approach in quantum chemistry and computational physics used to approximate the electronic structure of many-electron atoms and molecules. It simplifies the complex problem of interacting electrons in a field created by themselves and their nuclei by making several key approximations. ### Key Features of the Hartree-Fock Method: 1. **Mean-Field Theory**: HF is based on the assumption that each electron moves in an average field created by the other electrons and the nuclei.
