Post-Hartree–Fock Methods

Post-Hartree–Fock Methods — Configuration interaction, coupled cluster, and perturbation theory for electron correlation.

The field organises around several methodological axes: how the underlying objects are modelled, how they are measured, how they are connected to the rest of chemistry, and which empirical phenomena drive open questions. The references below anchor the topic in established treatments and current literature.

Foundations and core methods

A primary reference for this area is Modern Quantum Chemistry: Introduction to Advanced Electronic Structure Theory (Szabo and Ostlund, 1996), which lays out the core concepts that govern post-hartree–fock methods. The treatment frames the subject within the broader context of quantum chemistry and motivates the conceptual vocabulary used throughout this page. The discussion here cites this work as a general anchor rather than for a specific claim, since the exact contribution claim is treated cautiously in line with the Charted sourcing policy.

A complementary perspective comes from Introduction to Computational Chemistry (Jensen, 2017), which provides further background on the methods and results most relevant to post-hartree–fock methods. Together with the previous reference, it establishes the standard expectations for how practitioners approach the topic in current practice.

Open questions

Open methodological questions in post-hartree–fock methods include the transferability of the standard methods to harder regimes, the integration of newer measurement and modelling tools, and the connection to neighbouring subfields of quantum chemistry. Future revisions of this page will deepen the treatment as more primary literature is curated.