Collective Excitations and Ground State Correlations
Nuclear Theory
2009-10-28 v1
Abstract
A generalized RPA formalism is presented which treats pp and ph correlations on an equal footing. The effect of these correlations on the single-particle Green function is discussed and it is demonstrated that a self-consistent treatment of the single-particle Green function is required to obtain stable solutions. A simple approximation scheme is presented which incorporates for this self-consistency requirement and conserves the number of particles. Results of numerical calculations are given for O using a G-matrix interaction derived from a realistic One-Boson-Exchange potential.
Keywords
Cite
@article{arxiv.nucl-th/9408020,
title = {Collective Excitations and Ground State Correlations},
author = {E. Heinz and H. M"uther and H. A. Mavromatis},
journal= {arXiv preprint arXiv:nucl-th/9408020},
year = {2009}
}
Comments
16 Pages + 2 Figures (included at the end as uuencoded ps-files), TU-180894