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arXiv 1804.01433nucl-thnlin.CDnucl-ex
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核谱中混沌级贡献的一种简单方法

A simple approach to the chaos-order contributions in nuclear spectra

A. G. Magner, A. I. Levon, S. V. Radionov

摘要:

本文提出了一种简单的单参数最近邻间距分布(NNSD)用于核谱的统计分析。该分布是在量子态的能级排斥密度的线性近似下,在Wigner-Dyson方法中导出的。所得到的NNSD给出了与形变核集体态统计实验分布一致的关于Wigner和Poisson贡献的个体信息。使用这个NNSD,人们发现,由于固定的集体状态的角动量的投影的对称性破缺增强了一个混乱的移动的NNSD从泊松到维格纳分布的行为。

英文摘要:

The simple one-parameter nearest neighbor-spacing distribution (NNSD) is suggested for statistical analysis of nuclear spectra. This distribution is derived within the Wigner-Dyson approach in the linear approximation for the level repulsion density of quantum states. The obtained NNSD gives the individual information on the Wigner and Poisson contributions in agreement with that of the statistical experimental distributions of collective states in deformed nuclei. Using this NNSD, one finds that the symmetry breaking due to the fixing of projections of the angular momentum of collective states enhances a chaos as a shift of the NNSD from the Poisson to Wigner distribution behavior.

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