SEARCH Articles Figures Tables And phase space theory Brillouin-Wigner coupled-cluster theory Hilbert space approach Complete active space perturbation theory Complete active space perturbation theory CASPT2) calculations Complete active space self-consistent field valence bond theory Complete active space self-consistent fields coupled-cluster theory Complete model space theory Complete-active-space self-consistent field CASSCF) theory Constrained Brownian motion phase space kinetic theory Coupled-cluster theory Fock-space Empty space theory Fock space theory Fock space theory expansion theories Fock-space many-body theory Fock-space multireference coupled cluster theory Full Cluster Expansion Theories in Fock Space Full Cluster Expansion Theories in Hilbert Space General Transformation Theory in Thermodynamic Metric Space Group theory space groups Hilbert space expansion theories Hilbert space quantum theory Molecular orbital theory complete active space self-consistent field Orbits in space group theory Perturbation theory complete active space second-order Perturbation theory phase-space transition states Phase Space Theory (PST) Phase Space and the Quantum Theory Phase space theory Phase space theory Hamiltonian Phase space theory angular momentum conservation Phase space theory derivation Phase space theory microscopic reversibility Phase space theory orbiting transition state Phase space theory quantum Phase space theory rate constant Phase space theory, reaction kinetics Phase-space theory comparison with experimental data Phase-space theory strong coupling Reaction dynamics phase space theory Similarity transformation-based Fock-space theories Single-root multi-reference Brillouin-Wigner coupled cluster theory Hilbert space approach Space charge theory, assumptions Space-charge current, electromagnetic theory Statistical theories phase space Statistical theories phase-space theory Sufficient Theories for State-Space Formulation Sufficient theory state-space formulation The Hunt-Jackson Theory of Lamella Spacing The Space of Chemical Theory Theory of Space-Charge Layers