SEARCH Articles Figures Tables An Approximate Second-order Perturbation Treatment Analysis of the first-order perturbation energy Anharmonicity second order vibrational perturbation Brillouin-Wigner perturbation theory multi-reference second order Complete active second order perturbation correction First-order Perturbation Theory for Some Relativistic Effects First-order Perturbation Theory for a Non-degenerate Level First-order perturbation additivity First-order perturbation energy First-order perturbation equations First-order perturbation expressions First-order perturbation nuclear magnetic resonance First-order perturbed wavefunction First-order spin-orbit perturbation First-order time-dependent perturbation First-order time-dependent perturbation theory Fluid second-order perturbation Fourth-order Moller-Plesset perturbation Fourth-order Moller-Plesset perturbation theory Fourth-order, generally perturbation theory Hamiltonian second-order perturbation theory Infinite-order 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zeroth order Hamiltonian Perturbation third-order Perturbations first order reactions Polymer fluids first-order thermodynamic perturbation Pseudo first order reaction perturbations Quadrupolar interaction second-order perturbation theory Quantum second-order Moller-Plesset perturbation Rayleigh-Schrodinger Perturbation Theory through Second Order Rayleigh-Schrodinger perturbation second order correction Rayleigh-Schrodinger perturbation theory first-order corrections Rayleigh-Schrodinger perturbation theory third-order energy Rayleigh-Schrodinger perturbation theory, first order wave function Rayleigh-Schrodinger perturbation theory, second order energy Second order perturbation theory correlation effects Second order perturbation theory intermolecular interaction, electron Second order surface perturbation Second-order corrections, in perturbation Second-order diagrammatic perturbation Second-order many-body perturbation Second-order many-body perturbation approaches Second-order many-body perturbation theory Second-order perturbation coefficient Second-order perturbation equation Second-order perturbation evolution Second-order perturbation theory approximate Second-order perturbation theory, hydrogen Second-order perturbation transfer Second-order perturbations nonadditivity Second-order perturbations simplification Second-order perturbative analysis of donor-acceptor interactions Second-order vibrational perturbation theory Second-order vibrational perturbation theory energy levels Second-order vibrational perturbation theory excited electronic states Simple First-Order Perturbation Theory Some Applications of Second-order Many-body Perturbation Theory with a Moller-Plesset Reference Hamiltonian The Second-Order Perturbation Theory Theory perturbation, ordering parameter Thermodynamic perturbation theory first-order Third-order Many-body Perturbative Calculations Third-order diagrammatic perturbation Third-order many-body perturbation Third-order many-body perturbation theory Third-order perturbation theory Zero-order perturbation Zero-order perturbation theory Zero-order perturbation theory wavefunction