Reexamining the relation between the binding energy of finite nuclei and the equation of state of infinite nuclear matter
Reexamining the relation between the binding energy of finite nuclei and the equation of state of infinite nuclear matter
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重新审视有限核结合能与无限核物质状态方程之间的关系
DOI：
10.1103/physrevc.102.044333
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发表时间：
2020
影响因子：
3.1
通讯作者：
Wiringa, R. B.
中科院分区：
文献类型：
--
作者：
Atkinson, M. C.;Dickhoff, W. H.;Piarulli, M.;Rios, A.;Wiringa, R. B.
用色散光学模型在坐标空间中计算了、、和的能量密度，该模型受所有相关数据的约束，包括相应的基态能量。用格林函数蒙特卡罗方法计算了Argonne-Urbana二体和三体相互作用的能量密度。由于相空间因子，核内部对总结合能的贡献最小。因此，体积对内部能量的贡献没有受到很好的限制。色散光学模型的能量密度与无限核物质的从头算自洽格林函数计算符合得很好，仅限于处理短程关联和张量关联。这些结果使人们对核物质的状态方程受经验质量公式约束的程度提出了质疑。特别是，本文的结果表明，饱和核物质不需要每个粒子16-MeV的结合标准值，而当考虑到核物质内部时，只需要大约13-14 MeV的结合。
The energy density is calculated in coordinate space for,,, andusing a dispersive optical model constrained by all relevant data including the corresponding energy of the ground state. The energy density ofis also calculated using the Green's-function Monte Carlo method employing the Argonne-Urbana two- and three-body interactions. The nuclear interior minimally contributes to the total binding energy due to thephase-space factor. Thus, the volume contribution to the energy in the interior is not well constrained. The dispersive-optical-model energy densities are in good agreement withab initioself-consistent Green's-function calculations of infinite nuclear matter restricted to treat only short-range and tensor correlations. These results call into question the degree to which the equation of state for nuclear matter is constrained by the empirical mass formula. In particular, the results in this paper indicate that saturated nuclear matter does not require the canonical value of 16-MeV binding per particle but only about 13–14 MeV when the interior ofis considered.