Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2007-12-21
Nucl.Phys.A809:189-210,2008
Physics
Nuclear Physics
Nuclear Theory
Revised Version, 30 pages, 9 figures, 4 tables, Accepted for publication in Nuclear Physics A
Scientific paper
10.1016/j.nuclphysa.2008.06.002
We investigate the possibility to describe nuclear matter in an approach constrained by the prominent features of quantum chromodynamics. We mapped the in-medium nucleon self-energies of a point coupling relativistic mean-field model on self-energies obtained in effective theories of QCD. More precisely, the contributions to the nucleon self-energy have been separated into the short range part, driven principally by the quark structure of the nucleon described in a quark-diquark picture, and the long range part, dictated by pion dynamics and determined using in-medium chiral perturbation theory. A saturation point, although unrealistic, is obtained without any free parameter. A realistic description of nuclear matter saturation properties has been obtained with the inclusion of a small phenomenological correction term to the short range part of the self-energy.
Caillon J. C.
Huguet R.
Labarsouque J.
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