English

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

Nuclear Theory 2011-05-05 v1

Abstract

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 for the σ\sigma, ω\omega and ρ\rho 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 non-linear 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

Cite

@article{arxiv.nucl-th/0205009,
  title  = {Relativistic Hartree-Bogoliubov model with density-dependent meson-nucleon couplings},
  author = {T. Niksic and D. Vretenar and P. Finelli and P. Ring},
  journal= {arXiv preprint arXiv:nucl-th/0205009},
  year   = {2011}
}

Comments

42 pages with 15 figures, REVTeX4, submitted to Phys. Rev. C