Nuclear masses set bounds on quantum chaos.
Nuclear masses set bounds on quantum chaos.
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DOI：
10.1103/physrevlett.94.102501
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发表时间：
2005-02
影响因子：
8.6
通讯作者：
J. Barea;A. Frank;J. Hirsch;P. Isacker
中科院分区：
文献类型：
--
作者：
J. Barea;A. Frank;J. Hirsch;P. Isacker
有人认为，原子核内部的混沌运动可能会大大限制计算原子核质量的精度。利用功率谱分析，我们发现在质量计算中加入额外的物理贡献，通过多体相互作用或局域信息，消除了计算质量与测量质量之间的差异中的混沌信号。此外，系统地将全球质量公式和相邻原子核之间的一组关系应用于2000多个核质量，可以为计算质量的平均误差设定一个明确的上限，结果证明，这些平均误差几乎比估计的混沌分量小一个数量级。
It has been suggested that chaotic motion inside the nucleus may significantly limit the accuracy with which nuclear masses can be calculated. Using a power spectrum analysis we show that the inclusion of additional physical contributions in mass calculations, through many-body interactions or local information, removes the chaotic signal in the discrepancies between calculated and measured masses. Furthermore, a systematic application of global mass formulas and of a set of relationships among neighboring nuclei to more than 2000 nuclear masses allows one to set an unambiguous upper bound for the average errors in calculated masses, which turn out to be almost an order of magnitude smaller than estimated chaotic components.