In the framework of chiral theories, we establish the interrelation between the responses of the nuclear medium to probes which couple either to the quark scalar density fluctuation (i.e. the scalar susceptibility of quantum chromodynamics) or to the nucleonic ones. The second case concerns in fact the response to the scalar meson responsible for the nuclear binding in relativistic theories. In our approach both responses incorporate the nucleonic contributions. The aim of our work is to exploit this relation and the informations from lattice QCD to constrain the parameters which enter the problem of the nuclear binding. We show that in order to achieve a successful description of the binding properties, it is necessary to introduce the nucleon structure and confinement, in particular for the description of the three-body forces.
24.85.+p Quarks, gluons, and QCD in nuclei and nuclear processes 11.30.Rd Chiral symmetries 12.40.Yx Hadron mass models and calculations 21.30.-x Nuclear forces
This is a preview of subscription content, log in to check access