Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2002-07-10
Phys.Rev. C66 (2002) 024321
Physics
Nuclear Physics
Nuclear Theory
16 pages, 5 figures
Scientific paper
10.1103/PhysRevC.66.024321
A new decomposition of the Dirac structure of nucleon self-energies in the Dirac Brueckner-Hartree-Fock (DBHF) approach is adopted to investigate the equation of state for asymmetric nuclear matter. The effective coupling constants of $\sigma $, $\omega $, $\delta $ and $\rho $ mesons with a density dependence in the relativistic mean field approach are deduced by reproducing the nucleon self-energy resulting from the DBHF at each density for symmetric and asymmetric nuclear matter. With these couplings the properties of finite nuclei are investigated. The agreement of charge radii and binding energies of finite nuclei with the experimental data are improved simultaneously in comparison with the projection method. It seems that the properties of finite nuclei are sensitive to the scheme used for the DBHF self-energy extraction. We may conclude that the properties of the asymmetric nuclear matter and finite nuclei could be well described by the new decomposition approach of the G matrix.
Liu Ling
Ma Zhong-Yu
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