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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Shell structure and Ï-tensor correlations in density dependent relativistic Hartree-Fock theory
Physical Review C - Nuclear Physics, Volume 76, No. 3, Article 034314, Year 2007
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Description
A new effective interaction PKA1 with Ï-tensor couplings for the density dependent relativistic Hartree-Fock (DDRHF) theory is presented. It is obtained by fitting selected empirical ground state and shell structure properties. It provides satisfactory descriptions of nuclear matter and the ground state properties of finite nuclei at the same quantitative level as recent DDRHF and relativistic mean field (RMF) models. Significant improvement in the single-particle spectra is also found due to the inclusion of Ï-tensor couplings. As a result, PKA1 cures a common disease of the existing DDRHF and RMF Lagrangians, namely, the artificial shells at 58 and 92, and recovers the realistic subshell closure at 64. Moreover, the proper spin-orbit splittings and well-conserved pseudospin symmetry are obtained with the new effective interaction PKA1. Due to the extra binding introduced by the Ï-tensor correlations, the balance between the nuclear attractions and the repulsions is changed, and this constitutes the physical reason for the improvement of the nuclear shell structure. © 2007 The American Physical Society.
Authors & Co-Authors
Long, Wenhui
China, Beijing
Peking University
Japan, Aizuwakamatsu
The University of Aizu
Sagawa, Hiroyuki
Japan, Aizuwakamatsu
The University of Aizu
Van-Giai, Nguyen
France, Orsay
Laboratoire de Physique Des 2 Infinis Irène Joliot-curie
France, Gif-sur-yvette
Université Paris-saclay
Meng, Jie
China, Beijing
Peking University
Statistics
Citations: 170
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1103/PhysRevC.76.034314
ISSN:
05562813
Research Areas
Cancer
Study Approach
Quantitative