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arXiv 1301.2189nucl-th
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有限核和核物质中的自然轨道表示和费米海损耗

Natural orbitals representation and Fermi sea depletion in finite nuclei and nuclear matter

V. P. Psonis, Ch. C. Moustakidis, S. E. Massen

摘要:

应用关联的单体密度矩阵计算了N = Z、sp和sd壳层核的自然轨道和自然占位数。关联密度矩阵的计算采用Jastrow型中心关联和因子簇展开近似。讨论和分析了关联效应对自然轨道、自然占据数和费米海损耗的影响。此外,还利用核物质的关联单体密度矩阵的近似表达式,计算了相对动量分布和费米海损耗。我们发现,闭壳层核的费米海损耗值比开壳层核的费米海损耗值高,而核物质的费米海损耗值比开壳层核的费米海损耗值低。这一说法可以通过相关的实验研究得到证实。

英文摘要:

The natural orbitals and natural occupation numbers of various N = Z, sp and sd shell nuclei are calculated by applying a correlated one-body density matrix. The correlated density matrix has been evaluated by considering central correlations of Jastrow type and an approximation named factor cluster expansion. The correlation effects on the natural orbitals, natural occupation numbers and the Fermi sea depletion are discussed and analysed. In addition, an approximate expression for the correlated one-body density matrix of the nuclear matter has been used for the evaluation of the relative momentum distribution and the Fermi sea depletion. We found that the value of the Fermi sea depletion is higher in closed shell nuclei compared to open shell ones and it is lower compared to the case of nuclear matter. This statement could be confirmed by relevant experimental studies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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