论文标题
CA同位素的电荷半径和相关性
Charge radii of Ca isotopes and correlations
论文作者
论文摘要
我们研究了短期和远程相关性对Ca同位素电荷半径的影响。我们从由Hartree-fock加上Bardeen-Cooper-Schrieffer计算的独立粒子模型开始研究，该模型具有有限范围的有效核定核子核子类型的相互作用。通过考虑包含单个相关线的群集扩展的所有术语来评估短范围的相关效应。通过与准粒子随机相位近似声子耦合来考虑远程相关性。尽管短距离相关性的影响可以忽略不计，但远程相关性的影响很大程度上会改变独立的粒子模型并改善与实验数据的一致性。
We study the effects of short- and long-range correlations on the charge radii of Ca isotopes. We start our investigation with an independent particle model consisting in Hartree-Fock plus Bardeen-Cooper-Schrieffer calculations with finite-range effective nucleon-nucleon interactions of Gogny type. The short-range correlations effects are evaluated by considering all the terms of a cluster expansion containing a single correlation line. The long-range correlations are taken into account by including the coupling with the quasi-particle random phase approximation phonons. While the effects of the short-range correlations are negligible, those of the long-range correlations largely modify the independent particle model results and improve the agreement with the experimental data.
