Charge radii of Ca isotopes and correlations

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.

9 pages, 5 figures, 1 table. Accepted for publication in Physical Review C

References in corpus (2)

• Novel ansatz for charge radii in density functional theories
• Pairing in spherical nuclei: quasi-particle random phase approximation calculations with the Gogny interaction

Cited by in corpus (2)

• The charge radii of calcium isotopes within relativistic density functional theory: nucleon's finite-size and quadrupole shape fluctuation effects
• Effect of short- and long-range correlations on neutron skins of various neutron-rich doubly magic nuclei