https://doi.org/10.1140/epja/i2005-10074-6
Original Article
QCD susceptibilities and nuclear-matter saturation in a relativistic chiral theory
1
IPN Lyon, IN2P3-CNRS and UCB Lyon I, F-69622, Villeurbanne Cedex, France
2
Theory division, CERN, CH-12111, Geneva, Switzerland
* e-mail: g.chanfray@ipnl.in2p3.fr
Received:
9
February
2005
Accepted:
28
May
2005
Published online:
19
July
2005
We investigate the evolutions with density of the QCD scalar susceptibility and of the sigma mass in a chiral relativistic theory of nuclear matter, in the mean-field approximation. In order to reach saturation we need to introduce the scalar response of the nucleons. The consequences are a quite mild density dependence of the sigma mass and the progressive decoupling of the quark density fluctuations from the nucleonic ones at large densities.
PACS: 24.85.+p Quarks, gluons, and QCD in nuclei and nuclear processes – / 11.30.Rd Chiral symmetries – / 13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.) – / 21.30.-x Nuclear forces –
© Società Italiana di Fisica and Springer-Verlag, 2005
