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arXiv 2103.10096nucl-th
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由经验基态密度计算核能密度泛函

Nuclear energy density functionals from empirical ground-state densities

Giacomo Accorto, Tomoya Naito, Haozhao Liang, Tamara Niksic, Dario Vretenar

摘要:

基于密度泛函微扰理论和逆Kohn-Sham方法,建立了一个模型,该模型可用于改进相对论核能密度泛函,使之接近精确但未知的Kohn-Sham交换关联泛函.改进后的泛函由有限体系的经验精确基态密度确定。测试的模型和说明性的计算进行,从两个不同的近似泛函,再现的参数和密度依赖的目标功能,使用精确的对称N=Z系统的基态密度。

英文摘要:

A model is developed, based on the density functional perturbation theory and the inverse Kohn-Sham method, that can be used to improve relativistic nuclear energy density functionals towards an exact but unknown Kohn-Sham exchange-correlation functional. The improved functional is determined by empirical exact ground-state densities of finite systems. A test of the model and an illustrative calculation are performed, starting from two different approximate functionals, to reproduce the parameters and density dependence of a target functional, using exact ground-state densities of symmetric N=Z systems.

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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