title: Elimination of translational and rotational motions in nuclear orbital plus molecular orbital theory: application of Moller-Plesset perturbation theory.
abstract: The translation- and rotation-free nuclear orbital plus molecular orbital (TRF-NOMO) theory was developed to determine the nonadiabatic nuclear and electronic wave functions. This study presents a formulation of TRF-NOMO second-order Moller-Plesset (MP2) perturbation and Epstein-Nesbet (EN) theory with the use of the TRF Hamiltonian. Numerical assessment of the TRF-NOMO/MP2 and EN is performed for several molecules. We confirm the importance of the elimination of translational and rotational motions in the many-body calculations.
authors.affiliation: Department of Chemistry, School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan.
authors.forename: Minoru
authors.initials: M
authors.lastname: Hoshino
authors.forename: Hiromi
authors.initials: H
authors.lastname: Nakai