论文标题
在随机相近似和基于RPA的模型中的伪造偶极子模式
Spurious dipole mode in random-phase approximation and in the RPA-based models
论文作者
论文摘要
考虑了与自洽核结构模型中虚假偶极模式（SDM）存在有关的问题。制定了一种方法，该方法允许在扩展随机相近似（ERPA）理论中消除SDM与物理模式的耦合，尤其是在阻止ERPA类型的模型的时间内阻止近似（TBA）。结果表明，如果裸露的外部场$ e1 $ operation替换了有效的，该方法在$ e1 $激发的现实TBA计算中的应用使得与TBA计算结果非常接近。
The problems related to the existence of the spurious dipole mode (SDM) in the self-consistent nuclear-structure models are considered. A method is formulated that allows to eliminate coupling of the SDM with the physical modes in the extended random-phase approximation (ERPA) theories, in particular, in the time blocking approximation (TBA) which is the model of the ERPA type. It is shown that the application of this method in the realistic TBA calculations of the $E1$ excitations gives the results which are very close to the results of the TBA calculations without using this method if the bare external-field $E1$ operators are replaced by the effective ones.
