Saturation from nuclear pion dynamics

Details Saturation from nuclear pion dynamics Saturation from nuclear pion dynamics

1999-07-20

arxiv.org/abs/nucl-th/9907078v2

Phys.Lett.B474:7-14,2000

Physics

Nuclear Physics

Nuclear Theory

revised version, with minor corrections, 13 pages, 3 Postscript figures

Scientific paper

10.1016/S0370-2693(99)01494-X

We construct an equation-of-state for nuclear matter based on the chiral Lagrangian. The relevant scales are discussed and an effective chiral power expansion scheme, which is constructed to work around the nuclear saturation density, is presented. A realistic equation-of-state is obtained by adjusting one free parameter, when the leading and subleading terms in the expansion are included. The saturation mechanism is due to correlations induced by the one-pion-exchange interaction. Furthermore, we find a substantial deviation from the Fermi-gas estimate of the quark condensate in nuclear matter already at the saturation density.

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