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Application of anab-initio-inspired energy density functional to nuclei: Impact of the effective mass and the slope of the symmetry energy on bulk and surface properties
Physical Review C ( IF 3.2 ) Pub Date : 2021-06-15 , DOI: 10.1103/physrevc.103.064317
Stefano Burrello , Jérémy Bonnard , Marcella Grasso

The YGLO (Yang-Grasso-Lacroix-Orsay) functional is applied for the first time to investigate ground-state properties of different isotopic chains, from oxygen to lead. Mean-field Hartree-Fock calculations are carried out to analyze global trends for separation energies, binding energies, radii, neutron skins, and density profiles. We have three objectives: (i) we study whether this functional leads to a reasonable description of ground-state properties (despite the fact that it was not adjusted on nuclei) and we discuss the associated limitations; (ii) we investigate whether the correct description of the low-density nuclear gas, which is the peculiarity of this functional, has any relevant impact on predictions for nuclei; (iii) we connect nuclear energies, radii, and density profiles with properties of the corresponding equations of state of infinite matter. In particular, we identify a link existing between the isoscalar effective mass and spatial properties in neutron-deficient nuclei, namely proton radii and tails of proton densities. On the other side, we show that the slope of the symmetry energy is connected with spatial properties in neutron-rich nuclei: the slope computed at saturation density is related to neutron skin thicknesses, as is already well known, whereas the slope calculated at lower densities is linked to the tails of neutron densities. The YGLO effective mass turns out to be quite low. Directions to improve this aspect are explored and suggested at the end of the paper.

中文翻译:

仿射能量密度泛函在原子核中的应用:有效质量和对称能斜率对体积和表面性质的影响

YGLO (Yang-Grasso-Lacroix-Orsay) 泛函首次应用于研究从氧到铅的不同同位素链的基态特性。平均场 Hartree-Fock 计算用于分析分离能、结合能、半径、中子表层和密度分布的全局趋势。我们有三个目标:(i)我们研究这个泛函是否会导致对基态属性的合理描述(尽管它没有在原子核上进行调整)并讨论相关的局限性;(ii) 我们调查对低密度核气体的正确描述,这是该函数的特点,是否对核的预测有任何相关影响;(iii) 我们将核能、半径、和具有相应无限物质状态方程特性的密度剖面。特别是,我们确定了中子缺陷核的等标有效质量和空间特性之间存在联系,即质子半径和质子密度尾部。另一方面,我们表明对称能量的斜率与富中子核的空间特性有关:饱和密度下计算的斜率与中子表皮厚度有关,这是众所周知的,而饱和密度下计算的斜率密度与中子密度的尾部有关。YGLO 的有效质量非常低。本文末尾探讨并建议了改进这方面的方向。我们确定了中子缺陷核的等标有效质量和空间特性之间存在联系,即质子半径和质子密度尾部。另一方面,我们表明对称能量的斜率与富中子核的空间特性有关:饱和密度下计算的斜率与中子表皮厚度有关,这是众所周知的,而饱和密度下计算的斜率密度与中子密度的尾部有关。YGLO 的有效质量非常低。本文末尾探讨并建议了改进这方面的方向。我们确定了中子缺陷核的等标有效质量和空间特性之间存在联系,即质子半径和质子密度尾部。另一方面,我们表明对称能量的斜率与富中子核的空间特性有关:饱和密度下计算的斜率与中子表皮厚度有关,这是众所周知的,而饱和密度下计算的斜率密度与中子密度的尾部有关。YGLO 的有效质量非常低。本文末尾探讨并建议了改进这方面的方向。众所周知,在饱和密度下计算的斜率与中子表皮厚度有关,而在较低密度下计算的斜率与中子密度的尾部有关。YGLO 的有效质量非常低。本文末尾探讨并建议了改进这方面的方向。众所周知,在饱和密度下计算的斜率与中子表皮厚度有关,而在较低密度下计算的斜率与中子密度的尾部有关。YGLO 的有效质量非常低。本文末尾探讨并建议了改进这方面的方向。
更新日期:2021-06-15
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