Density dependence of meson - nucleon vertices in nuclear matter

Abstract

Changes in the meson-nucleon coupling constant and the vertex form factor in nuclear matter are studied in a modified Skyrme Lagrangian including the sigma-meson field that satisfies the scale invariance. Renormalization of the axial-vector coupling constant, and the nucleon mass are studied in a consistent model. The results are consistent with the empirical evidence. A calculation of pi N commutator, sigma-term, indicates that the medium changes its magnitude considerably.

arXiv comment16 pages, epsfig.sty, 5 figures (Ps).The section "Discussions and summary" has been rewritten. Accepted for publication in Nucl. Phys. A

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• Medium modification of the nucleon mechanical properties: Abel tomography case
• Meson - nucleon vertex form factors at finite temperature
• QCD chiral condensate and pseudoscalar-meson properties in the nuclear medium at finite temperature
• Electroweak form factors of baryons in dense nuclear matter
• Is there a crystalline state of nuclear matter?
• Neutrino propagation in the neutron star with uncertainties from nuclear, hadron, and particle physics
• Nucleon-nucleon potential in finite nuclei