Relativistic Hartree-Bogoliubov model with density-dependent meson-nucleon couplings

Scientific paper - Original scientific paper

• Author: Tamara Nikšić
• Author: Dario Vretenar
• Author: P. Finelli
• Author: Peter Ring
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

The relativistic Hartree-Bogoliubov (RHB) model is extended to include density-dependent meson-nucleon couplings. The effective Lagrangian is characterized by a phenomenological density dependence of the σ, ω, and ρ meson-nucleon vertex functions, adjusted to properties of nuclear matter and finite nuclei. Pairing correlations are described by the pairing part of the finite range Gogny interaction. The new density-dependent effective interaction DD-ME1 is tested in the analysis of the equations of state for symmetric and asymmetric nuclear matter, and of ground-state properties of the Sn and Pb isotopic chains. Results of self-consistent RHB calculations are compared with experimental data, and with results previously obtained in the RHB model with nonlinear self-interactions, as well as in the density-dependent relativistic hadron field (DDRH) model. Parity-violating elastic electron scattering on Pb and Sn nuclei is calculated using a relativistic optical model with inclusion of Coulomb distortion effects, and the resulting asymmetry parameters are related to the neutron ground-state density distributions.

• Keywords (english): mean-field theory; ground-state properties; elastic electron-scattering; range pairing forces; neutron skin; drip line
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C - Nuclear Physics
• Numbering: vol. 66, no. 2, pp. 024306-15
• p-ISSN: 0556-2813
• e-ISSN: 1089-490X
• DOI: https://doi.org/10.1103/PhysRevC.66.024306
• URN:NBN: urn:nbn:hr:217:602408
• Publication: 2002
• Document URL: http://link.aps.org/doi/10.1103/PhysRevC.66.024306
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2002) by the American Physical Society.
• Created on: 2019-10-13 12:15:57