SEARCH Articles Figures Tables M0ller-Plesset perturbation theory M0ller-Plesset perturbation theory energy M0ller-Plesset perturbation theory first-order M0ller-Plesset perturbation theory polarization propagator M0ller-Plesset perturbation theory second-order M0ller-Plesset perturbation theory wavefunction Singularity Structure of M0ller-Plesset Perturbation Theory