6533b823fe1ef96bd127f715

RESEARCH PRODUCT

Quark-meson coupling model with constituent quarks: Exchange and pionic effects

Gastão KreinM.e. BraccoMarina Nielsen

subject

PhysicsQuarkNuclear and High Energy PhysicsParticle physicsMesonNuclear TheoryHigh Energy Physics::LatticeBinding energyHigh Energy Physics::PhenomenologyNuclear TheoryFOS: Physical sciencesObservableNuclear matterNuclear Theory (nucl-th)Coupling (physics)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics::ExperimentNucleonNuclear Experiment

description

The binding energy of nuclear matter including exchange and pionic effects is calculated in a quark-meson coupling model with massive constituent quarks. As in the case with elementary nucleons in QHD, exchange effects are repulsive. However, the coupling of the mesons directly to the quarks in the nucleons introduces a new effect on the exchange energies that provides an extra repulsive contribution to the binding energy. Pionic effects are not small. Implications of such effects on observables are discussed.

10.1016/s0370-2693(98)00654-6http://arxiv.org/abs/nucl-th/9805019