Chiral symmetry, scalar field and confinement : from nucleon structure to nuclear matter

Details Chiral symmetry, scalar field and confinement : from nucleon structure to nuclear matter Chiral symmetry, scalar field and confinement : from nucleon structure to nuclear matter

2010-10-07

arxiv.org/abs/1010.1423v1

AIP Conf.Proc.1322:36-45,2010

Physics

Nuclear Physics

Nuclear Theory

talk given by G. Chanfray at the Chiral10 WORKSHOP, Valencia (Spain), June 21-24, 2010

Scientific paper

10.1063/1.3542008

We discuss the relevance of the scalar modes appearing in chiral theories with spontaneous symmetry breaking such as the NJL model for nuclear matter studies. We show that it depends on the relative role of chiral symmetry breaking and confinement in the nucleon mass origin. It is only in the case of a mixed origin that nuclear matter can be stable and reach saturation. We describe models of nucleon structure where this balance is achieved. We show how chiral constarints and confinement modify the QCD sum rules for the mass evolution in nuclear matter.

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