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arXiv · 2203.03493

Charge radii of Ca isotopes and correlations

G. Co'·M. Anguiano·A. M. Lallena
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Abstract

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.

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G. Co', M. Anguiano, A. M. Lallena. 2022-03-07. Charge radii of Ca isotopes and correlations. https://doi.org/10.1103/physrevc.105.034320

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