Long-range correlations in finite nuclei: comparison of two self-consistent treatments
Nuclear Theory
2009-10-30 v1
Abstract
Long-range correlations, which are partially responsible for the observed fragmentation and depletion of low-lying single-particle strength, are studied in the Green's function formalism. The self-energy is expanded up to second order in the residual interaction. We compare two methods of implementing self-consistency in the solution of the Dyson equation beyond Hartree-Fock, for the case of the 16O nucleus. It is found that the energy-bin method and the BAGEL method lead to globally equivalent results. In both methods the final single-particle strength functions are characterized by exponential tails at energies far from the Fermi level.
Keywords
Cite
@article{arxiv.nucl-th/9701059,
title = {Long-range correlations in finite nuclei: comparison of two self-consistent treatments},
author = {Y. Dewulf and D. Van Neck and L. Van Daele and M. Waroquier},
journal= {arXiv preprint arXiv:nucl-th/9701059},
year = {2009}
}
Comments
11 pages, 3 postscript figures, Revtex, uses epsf.sty, to be published in Physics Letters B