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arXiv 1408.6941nucl-th
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具有有效力的基态八极相关能

Ground state octupole correlation energies with effective forces

Luis M. Robledo

摘要:

在不同的理论框架下,用Gogny力的D1M变量计算了基态八极子相关能,并进行了详细的分析。首先,我考虑了在平均场水平上通过打破反射对称性而获得的相关能。其次考虑了对称性(宇称)恢复带来的能量增益,最后分析了与轴对称八极态组态混合后的基态相关能。后者对理论结合能的影响表明八极相关并不显著影响结合能的趋势和系统性,因此不能改善理论模型在这方面的性能。特别是,太大的“壳层间隙”预测的自洽平均场模型和相关的天体物理学的情况下,不改变八极相关。

英文摘要:

The ground state octupole correlation energy is computed with the D1M variant of the Gogny force in different theoretical frameworks and analyzed in detail. First I consider the correlation energy gained at the mean field level by breaking reflection symmetry. Next I consider the energy gain coming from symmetry (parity) restoration and finally I analyze the ground state correlation energy after configuration mixing with axially symmetric octupole states. The impact of the latter on theoretical binding energies indicates that octupole correlations do not affect in a significant way the trend and systematic of binding energies and therefore can not improve the performance of theoretical models in this respect. In particular, the too-large "shell gaps" predicted by self-consistent mean field models and relevant in astrophysics scenarios are not altered by the octupole correlations.

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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