Overlap of quasiparticle random-phase approximation states for nuclear matrix elements of the neutrino-less double-β decay
Overlap of quasiparticle random-phase approximation states for nuclear matrix elements of the neutrino-less double-β decay
复制标题
无中微子双β衰变核矩阵元的准粒子随机相位近似态的重叠
DOI：
10.1103/physrevc.86.021301
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发表时间：
2012
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;J. Terasaki;J. Terasaki
将准粒子随机相近似（QRPA）应用于两个核，计算了基于不同核的QRPA激发态的重叠。目的是计算双衰变中间核态的重叠。在将闭包近似应用于核矩阵元素后，我们使用了类粒子QRPA。利用QRPA基态显式方程严格计算了重叠量。给出了重叠的公式，并进行了试验计算。显示了截断所使用的有效性。
Quasiparticle random-phase approximation (QRPA) is applied to two nuclei, and the overlap of the QRPA excited states based on the different nuclei is calculated. The aim is to calculate the overlap of intermediate nuclear states of the double-decay. We use the like-particle QRPA after the closure approximation is applied to the nuclear matrix elements. The overlap is calculated rigorously by making use of the explicit equation of the QRPA ground state. The formulation of the overlap is shown, and a test calculation is performed. The effectiveness of the truncations used is shown.