SEARCH Articles Figures Tables An effective Hamiltonian Bloch effective Hamiltonian Bloch’s effective Hamiltonian Canonical effective Hamiltonian Charge transfer effective Hamiltonians Concept of Effective Hamiltonians Conical intersections effective Hamiltonians Crystal field method effective Hamiltonian Defining an effective Hamiltonian Degenerate perturbation theory effective Hamiltonian calculations Density matrix effective bond Hamiltonians Derivation of the effective Hamiltonian Dirac Hamiltonian relativistic effects Effective Hamiltonian Effective Hamiltonian Effective Hamiltonian Born-Oppenheimer approximation Effective Hamiltonian Fock space transformation Effective Hamiltonian Magnus expansion Effective Hamiltonian abstract Effective Hamiltonian based contracted SOCI Effective Hamiltonian derivation Effective Hamiltonian diagonalizing Effective Hamiltonian diatomic molecule rotational excitation Effective Hamiltonian for a single vibrational level Effective Hamiltonian for cooperative Jahn-Teller effect Effective Hamiltonian for the Effective Hamiltonian for the R-system Effective Hamiltonian formalism Effective Hamiltonian formalism approach Effective Hamiltonian formalism parameterization Effective Hamiltonian formalism projection operator Effective Hamiltonian formalisms, review Effective Hamiltonian hydrogen bonds Effective Hamiltonian mapping operators Effective Hamiltonian mappings Effective Hamiltonian of the crystal field (EHCF) Effective Hamiltonian processes Effective Hamiltonian technique Effective Hamiltonian theory Effective Hamiltonian time-independent operator Effective Hamiltonian valence-only Effective Hamiltonian, concept Effective Hamiltonians for the guests in endohedral complexes Effective Hamiltonians in a model space Effective Hamiltonians relation Effective Zeeman Hamiltonian Effective bond Hamiltonians Effective nuclear Hamiltonian Effective one-electron Hamiltonian Effective one-electron spin-orbit Hamiltonians Effective valence Hamiltonian method Effective valence-shell Hamiltonian Effective-operator Hamiltonian Eigenfunctions effective Hamiltonians, mapping Electronic Hamiltonian effective Estimates and interpretation of parameters in the effective Hamiltonian Ground-state wave function effective Hamiltonians Hamiltonian Hermitian effective Hamiltonian effective hybrid Hamiltonian effective second-order spin Hamiltonian matrix effective Hamiltonian operator Stark effect Hamiltonian operator Zeeman effect Hamiltonian relativistic effects Hamiltonian second-order effective Hamiltonian valence-effective Hamiltonian, effective spin Hartmann-Hahn transfer effective Hamiltonian Hermitian effective Hamiltonian formalisms Hilbert space effective Hamiltonians Mapping operators Hermitian effective Hamiltonian Model state effective Hamiltonian Molecular method: valence effective hamiltonian Nonadiabatic effects Hamiltonian Nuclear magnetic resonance effective” spin Hamiltonians Orbital interaction effective Hamiltonians Poly valence effective hamiltonian calculation Polymers treated with the valence effective Hamiltonian QM-BE methods the effective Hamiltonian Quantum chemistry Valence effective Hamiltonian Quantum representations effective Hamiltonians Rabi frequency effective Hamiltonian Renner-Teller effect Hamiltonian equation Renner-Teller effect effective Hamiltonians Rotating wave transformation effective Hamiltonian Rotational excitation, effective Hamiltonian Schmidt orthogonalized effective Hamiltonians Semiempirical Hamiltonians, effective Semiempirical Hamiltonians, effective operators Size consistency, effective Hamiltonians Spectroscopic effective Hamiltonian Spectroscopic effective Hamiltonian model Spin-orbit coupling effective Hamiltonians State independence effective Hamiltonian formalisms Statistical Mechanics for the Effective Hamiltonian The Complex-Energy Effective Hamiltonian The First-Order Effective Hamiltonian The Hamiltonian and relativistic effective core potentials The Van Vleck Transformation and Effective Hamiltonians The Zero- and Higher-Order Effective Hamiltonians The effective Hamiltonian Transformation for the Effective Hamiltonian Triatomic molecules effective Hamiltonians Valence Bond Formalism Using an Effective Hamiltonian Valence effective Hamiltonian technique Valence-only effective Hamiltonians Vibrations effective Hamiltonian Wave operator, effective Hamiltonians Zeeman effect Hamiltonian, spin