Nuclear phenomena derived from quark-gluon strings
Abstract
We propose a QCD based many-body model for the nucleus where the strong coupling regime is controlled by a three body string force and the weak coupling regime is dominated by a pairing force. This model operates effectively with a quark-gluon Lagrangian containing a pairing force from instantons and a baryonic string term which contains a confining potential. The unified model for weak and strong coupling regimes, is, however, only consistent at the border of perturbative QCD. The baryonic string force is necessary, as a {stability and} compressibility analysis shows, for the occurrence of the phases of nuclear matter. The model exhibits a quark deconfinement transition and chiral restoration which are suggested by QCD and give qualitatively correct numerics. The effective model is shown to be isomorphic to the Nambu-Jona-Lasinio model and exhibits the correct chirality provided that the chiral fields are identified with the 2-particle strings, which are natural in a QCD framework
Cite
@article{arxiv.nucl-th/0409030,
title = {Nuclear phenomena derived from quark-gluon strings},
author = {Henrik Bohr and Constanca Providencia and Joao da Providencia},
journal= {arXiv preprint arXiv:nucl-th/0409030},
year = {2009}
}
Comments
17 pages, 4 figures, 2 tables