Stochastic estimation of nuclear level density in the nuclear shell model: an application to parity-dependent level density in 58Ni
Stochastic estimation of nuclear level density in the nuclear shell model: an application to parity-dependent level density in 58Ni
复制标题
核壳模型中核能级密度的随机估计：58Ni 中宇称相关能级密度的应用
DOI：
10.1016/j.physletb.2015.12.005
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发表时间：
2016
影响因子：
4.4
通讯作者：
T. Otsuka
中科院分区：
文献类型：
--
作者：
N. Shimizu;Y. Utsuno;Y. Futamura;T. Sakurai;T. Mizusaki;T. Otsuka
介绍了一种新的方法来获得大规模壳模型计算中的能级密度。我们的方法是一个随机估计的特征值计数的基础上移位Krylov子空间方法，这使我们能够获得巨大的哈密顿矩阵的水平密度。这个框架导致了一个成功的描述两个低洼的光谱和实验观察到的平衡J π= 2+和2−态在58 Ni在一个统一的方式。
We introduce a novel method to obtain level densities in large-scale shell-model calculations. Our method is a stochastic estimation of eigenvalue count based on a shifted Krylov-subspace method, which enables us to obtain level densities of huge Hamiltonian matrices. This framework leads to a successful description of both low-lying spectroscopy and the experimentally observed equilibration of J π= 2+ and 2− states in 58 Ni in a unified manner.