Overlap of quasiparticle random-phase approximation states based on ground states of different nuclei: Mathematical properties and test calculations
Overlap of quasiparticle random-phase approximation states based on ground states of different nuclei: Mathematical properties and test calculations
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基于不同原子核基态的准粒子随机相近似态的重叠：数学性质和测试计算
DOI：
10.1103/physrevc.87.024316
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
J. Terasaki
中科院分区：
文献类型：
--
作者：
今井麻美;J. Terasaki
在准粒子无规相位近似（QRPA）下计算了激发态的重叠，模拟了双衰变的中间核态的重叠。我们的基本思想是在封闭近似的帮助下使用类粒子QRPA，并利用QRPA基态的显式方程尽可能严格地计算重叠。详细地示出了该制剂，并研究了重叠矩阵的数学性质。用Skyrme和体积配对能量泛函对相对轻的核进行了两个实验计算。计算中使用的截断的有效性进行了检查和确认。
The overlap of the excited states in quasiparticle random-phase approximation (QRPA) is calculated to simulate the overlap of the intermediate nuclear states of the double-decay. Our basic idea is to use the like-particle QRPA with the aid of the closure approximation and calculate the overlap as rigorously as possible by making use of the explicit equation of the QRPA ground state. The formulation is shown in detail, and the mathematical properties of the overlap matrix are investigated. Two test calculations are performed for relatively light nuclei with the Skyrme and volume-pairing energy functionals. The validity of the truncations used in the calculation is examined and confirmed.