本文回顾了我们最近关于150Nd双贝塔衰变的计算.我们介绍了使用基于现实核力的质子-中子准粒子无规相位近似(pn-QRPA)方法计算了双贝塔衰变矩阵元的基本步骤.通过约束两中微子双贝塔衰变的费米矩阵元,我们部分实现了双贝塔衰变系统的同位旋对称性破缺的恢复,我们讨论了这种恢复对无中微子双贝塔衰变矩阵元的影响.我们发现,无论是对于有中微子或者无中微子的衰变,加莫夫-泰勒矩阵元只依赖于T=0的相互作用,而对T=1的相互作用不敏感,费米矩阵元则恰恰相反.对比以前的结果,我们发现同位旋恢复压低了无中微子双贝塔衰变的费米矩阵元,而加莫夫泰勒矩阵元则没有受到影响.我们对结果的误差进行了粗略的估计,同时与其他的计算进行了比较,发现各种方法之间依旧存在较大的分歧. This paper reviews our recent calculation of 150Nd double beta decay We present the basic steps for calculating the double beta decay matrix elements using a proton-neutron quasi-random phase approximation (pn-QRPA) method based on real- Constraints on the Fermi matrix elements of two neutrino double beta decay, we partially realize the restoration of the isospin symmetry breaking of the double beta decay system, we discuss the effect of this recovery on the non-neutrino double beta decay matrix element We find that the Gamow-Taylor matrix elements depend on the interaction of T = 0 and insensitive to the interaction of T = 1, both for neutrino and neutrino-free decay. The Fermi matrix In contrast to the previous results, we find that the isomorphic restoration lowers the Fermi matrix elements without nebular double beta decay, while the Gamow Taylor matrix elements are unaffected, and we make a rough sketch of the results At the same time, it was compared with other calculations and found that there still existed big differences among various methods.