Global performance of multireference density functional theory for low-lying states in sd-shell nuclei

Global performance of multireference density functional theory for low-lying states in sd-shell nuclei
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sd-壳核低位态多参考密度泛函理论的全局性能

DOI:
10.1103/physrevc.92.054321
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发表时间:
2015-10
期刊:
影响因子:
3.1
通讯作者:
Zhou Xian-Rong
Zhou Xian-Rong
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Wu Xian-Ye;Zhou Xian-Rong

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本文采用基于相对论点耦合能量密度泛函(EDF)的多参考密度泛函理论(MR-DFT),对Ne,Mg,Si,S,Ar等偶偶同位素的低激发态进行了全面的研究。利用生成坐标法(GCM)对粒子数和角动量投影轴向形变态进行组态混合,考虑了超平均场(BMF)效应。与以前基于非相对论EDF和现有数据的研究相比,本文考察了MR-DFT对基态和前2 ^+,4^+$态性质的全局性能。我们的研究结果表明,在BMF水平上参数化的EDF需要实现定量描述。
We present a comprehensive study of low-lying states in even-even Ne, Mg, Si, S, Ar isotopes with the multireference density functional theory (MR-DFT) based on a relativistic point-coupling energy density functional (EDF). Beyond mean-field (BMF) effects are taken into account by configuration mixing of both particle-number and angular-momentum projected axially deformed states with generator coordinate method (GCM). Global performance of the MR-DFT for the properties of both ground state and of the first $2^+, 4^+$ states is examined, in comparison with previous studies based on nonrelativistic EDFs and available data. Our results indicate that an EDF parameterized at the BMF level is demanded to achieve a quantitative description.
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