4He energies and radii by the coupled-cluster method with many-body average potential
4He energies and radii by the coupled-cluster method with many-body average potential
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4He能量和半径的多体平均势耦合团簇法
DOI：
10.1103/physrevc.86.014317
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发表时间：
2012
影响因子：
3.1
通讯作者：
M. Kohno and R. Okamoto
中科院分区：
文献类型：
--
作者：
Yoshiyuki Inoue;Susumu Inoue;Masakazu A. R. Kobayashi;Ryu Makiya;Yuu Niino & Tomonori Totani;M. Kohno and R. Okamoto
通过引入平均多体势，改进的耦合团簇方法（CCM）提供了一个有用的框架来组织CCM方程中出现的大量项，使我们能够更容易地阐明CCM理论的结构和各项的物理意义.我们明确地将这个框架应用到他，保留一个身体和两个身体的相关性作为第一个说明的尝试。给出了两种现代核子-核子相互作用（AV 18和CD-Bonn）及其低动量相互作用的数值结果。讨论了短程关联和多体关联的特点。虽然没有明确考虑，基态能量的表达式中存在的三核子力。
The reformulated coupled-cluster method (CCM), in which average many-body potentials are introduced, provides a useful framework to organize numerous terms appearing in CCM equations, which enables us to clarify the structure of the CCM theory and physical importance of various terms more easily. We explicitly apply this framework toHe, retaining one-body and two-body correlations as the first illustrating attempt. Numerical results with using two modern nucleon-nucleon interactions (AV18 and CD-Bonn) and their low-momentum interactions are presented. The characters of short-range and many-body correlations are discussed. Although not considered explicitly, the expression of the ground-state energy in the presence of a three-nucleon force is given.