论文标题
地面相关性对$^{40} $ ca中磁偶极激发的影响
Effects of ground-state correlations on magnetic dipole excitations in $^{40}$Ca
论文作者
论文摘要
使用从时间依赖性的密度 - 矩阵理论中得出的扩展随机相位近似（ERPA）研究了$^{40} $ CA中磁偶极激发的影响。比较与其他扩展的RPA方法，重新归一化的RPA，自洽的RPA和延长的第二个RPA进行比较，其中还包括地面相关性的效果。指出的是，在ERPA中正确处理的两个粒子空间的直接激发导致$^{40} $ CA中的强磁偶极转变。
The effects of ground-state correlations on the magnetic dipole excitations in $^{40}$Ca are studied using an extended random phase approximation (ERPA) derived from the time-dependent density-matrix theory. Comparison is made with other extended RPA approaches, the renormalized RPA, the self-consistent RPA and the extended second RPA which also include the effects of ground-state correlations. It is pointed out that direct excitations from two particle - two hole space which are properly treated in ERPA cause strong magnetic dipole transitions in $^{40}$Ca.
