Fock terms in the quark-meson coupling model
Nuclear Theory
2010-02-17 v2
Abstract
The mean field description of nuclear matter in the quark-meson coupling model is improved by the inclusion of exchange contributions (Fock terms). The inclusion of Fock terms allows us to explore the momentum dependence of meson-nucleon vertices and the role of pionic degrees of freedom in matter. It is found that the Fock terms maintain the previous predictions of the model for the in-medium properties of the nucleon and for the nuclear incompressibility. The Fock terms significantly increase the absolute values of the single-particle, four-component scalar and vector potentials, a feature that is relevant for the spin-orbit splitting in finite nuclei.
Cite
@article{arxiv.nucl-th/9810023,
title = {Fock terms in the quark-meson coupling model},
author = {G. Krein and A. W. Thomas and K. Tsushima},
journal= {arXiv preprint arXiv:nucl-th/9810023},
year = {2010}
}
Comments
RevTex, 17 pages, 4 Postscript figures, version to appear in Nucl. Phys. A