A Proposal for a Modified Moller-Plesset Perturbation Theory

Details A Proposal for a Modified Moller-Plesset Perturbation Theory A Proposal for a Modified Moller-Plesset Perturbation Theory

2004-10-24

arxiv.org/abs/cond-mat/0410611v1

Physics

Condensed Matter

Materials Science

10 pages, 1 figure

Scientific paper

A modified version of the Moller-Plesset approach for obtaining the correlation energy associated to a Hartree-Fock ground state is proposed. The method is tested in a model of interacting fermions that allows for an exact solution. Using up to third order terms improved results are obtained, even more accurate in the limit of loosely bound particles. This result suggests the possible convenience of the scheme for the study of chemical bound problems.

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