Composite nucleons in scalar and vector mean-fields

Details Composite nucleons in scalar and vector mean-fields Composite nucleons in scalar and vector mean-fields

1995-06-06

arxiv.org/abs/nucl-th/9506003v1

Phys.Rev.C52:2789-2791,1995

Physics

Nuclear Physics

Nuclear Theory

10 pages

Scientific paper

10.1103/PhysRevC.52.2789

We emphasize that the composite structure of the nucleon may play quite an important role in nuclear physics. It is shown that the momentum-dependent repulsive force of second order in the scalar field, which plays an important role in Dirac phenomenology, can be found in the quark-meson coupling (QMC) model, and that the properties of nuclear matter are well described through the quark-scalar density in a nucleon and a self-consistency condition for the scalar field. The difference between theories of point-like nucleons and composite ones may be seen in the change of the $\omega$-meson mass in nuclear matter if the composite nature of the nucleon suppresses contributions from nucleon-antinucleon pair creation.

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