Journal
EUROPEAN PHYSICAL JOURNAL A
Volume 25, Issue 1, Pages 151-157Publisher
SPRINGER
DOI: 10.1140/epja/i2005-10074-6
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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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