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arXiv 2111.04782nucl-th
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协变密度泛函理论描述电荷半径的全局性能及相关指标

Global performance of covariant density functional theory in description of charge radii and related indicators

A. V. Afanasjev, U. C. Perera, P. Ring

摘要:

简要回顾了现有的努力,了解电荷半径和相关指标在全球范围内的协变密度泛函理论(CDFT)。使用协变能量密度泛函(CEDFs)的主要类别,已建立的CDFT框架内的实验绝对和微分电荷半径的描述的全球准确性。这一评估是补充的理论统计和系统的不确定性的评价,在描述的电荷半径。介绍了变形锕系元素和轻超重核微分电荷半径描述的准确性的新结果,并对八极形变在它们再现中的作用进行了评价。新颖的机制,导致奇,甚至交错的电荷半径进行了讨论。最后,我们分析了自洽效应在精确描述微分电荷半径中的作用。

英文摘要:

A short review of existing efforts to understand charge radii and related indicators on a global scale within the covariant density functional theory (CDFT) is presented. Using major classes of covariant energy density functionals (CEDFs), the global accuracy of the description of experimental absolute and differential charge radii within the CDFT framework has been established. This assessment is supplemented by an evaluation of theoretical statistical and systematic uncertainties in the description of charge radii. New results on the accuracy of the description of differential charge radii in deformed actinides and light superheavy nuclei are presented and the role of octupole deformation in their reproduction is evaluated. Novel mechanisms leading to odd-even staggering in charge radii are discussed. Finally, we analyze the role of self-consistency effects in an accurate description of differential charge radii.

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