QCD susceptibilities and nuclear-matter saturation in a relativistic chiral theory

被引：0
|
作者：
G. Chanfray
M. Ericson
机构：
[1] IN2P3-CNRS and UCB Lyon I,IPN Lyon
[2] CERN,Theory division
来源：
The European Physical Journal A - Hadrons and Nuclei | 2005年 / 25卷
关键词：
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;
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摘要：
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.
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页码：151 / 157
页数：6
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