New Kohn-Sham density functional based on microscopic nuclear and neutron matter equations of state

被引:96
作者
Baldo, M. [1 ]
Robledo, L. M. [2 ]
Schuck, P. [3 ,4 ,5 ,6 ]
Vinas, X. [7 ,8 ]
机构
[1] Ist Nazl Fis Nucl, Sez Catania, I-95123 Catania, Italy
[2] Univ Autonoma Madrid, Dep Fis Teor Modulo 15, E-28049 Madrid, Spain
[3] CNRS, UMR8608, Inst Phys Nucl, F-91406 Orsay, France
[4] Univ Paris 11, F-91505 Orsay, France
[5] CNRS, Lab Phys & Modelisat Milieux Condenses, F-38042 Grenoble 9, France
[6] Univ Grenoble 1, F-38042 Grenoble 9, France
[7] Univ Barcelona, Fac Fis, Dept Estruct & Constituents Mat, E-08028 Barcelona, Spain
[8] Univ Barcelona, Fac Fis, Inst Ciencies Cosmos, E-08028 Barcelona, Spain
来源
PHYSICAL REVIEW C | 2013年 / 87卷 / 06期
关键词
OF-STATE; COULOMB EXCHANGE; 3-BODY FORCES; INCOMPRESSIBILITY; PARAMETRIZATION; SYSTEMATICS; RESONANCES; ASYMMETRY; EXPANSION; SURFACE;
D O I
10.1103/PhysRevC.87.064305
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
A new version of the Barcelona-Catania-Paris energy functional is applied to a study of nuclear masses and other properties. The functional is largely based on calculated ab initio nuclear and neutron matter equations of state. Compared to typical Skyrme functionals having 10-12 parameters apart from spin-orbit and pairing terms, the new functional has only 2 or 3 adjusted parameters, fine tuning the nuclear matter binding energy and fixing the surface energy of finite nuclei. An energy rms value of 1.58 MeV is obtained from a fit of these three parameters to the 579 measured masses reported in the Audi and Wapstra [Nucl. Phys. A 729, 337 (2003)] compilation. This rms value compares favorably with the one obtained using other successful mean field theories, which range from 1.5 to 3.0 MeV for optimized Skyrme functionals and 0.7 to 3.0 for the Gogny functionals. The other properties that have been calculated and compared to experiment are nuclear radii, the giant monopole resonance, and spontaneous fission lifetimes.
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页数:23
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