Calculations of Pion Excess in Nuclei
Calculations of Pion Excess in Nuclei
复制标题
原子核中π介子过量的计算
DOI：
10.1103/physrevlett.51.763
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发表时间：
1983
影响因子：
8.6
通讯作者：
R. Wiringa
中科院分区：
文献类型：
--
作者：
B. Friman;V. Pandharipande;R. Wiringa
在静势近似下，作者构造了由于核子间π介子交换力而存在于核中的多余π介子的数算符。期望值计算与使用变分波函数从一个现实的哈密顿量。结果提出的系统范围从氘核到核物质：例如，Fe 56估计有107个额外的π介子，在与单个核子相关的π介子云之上。
The authors construct, in the static potential approximation, the number operator for excess pions present in nuclei due to the pion-exchange forces between nucleons. Expectation values are calculated with use of variational wave functions obtained from a realistic Hamiltonian. Results are presented for systems ranging from the deuteron to nuclear matter: For example Fe 56 is estimated to have∼ 7 extra pions, over and above the pion clouds associated with the individual nucleons.