Scalar response of the nucleon chiral symmetry and nuclear matter properties

Abstract

In this talk we present a description of nuclear binding in a chiral approach based on the existence of a chiral invariant scalar field associated with the generation of the masses through spontaneous chiral symmetry breaking. We discuss the emergence of such a field on the example of the NJL model. We also incorporate the effect of confinement at the level of the nucleon substructure to stabilize nuclear matter. In a particular quark-diquark model we illustrate the simutaneous influences of spontaneous chiral symmetry breaking and confinement on the nucleon mass and on the nuclear matter description.

Talk given by G. chanfray at "Achievements and New Directions in Subatomic Physics: Workshop in Honour of Tony Thomas' 60th Birthday Adelaide, South Australia. February 15 - February 19, 2010".