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Random-phase approximation based on relativistic point-coupling models

T. Niksic·D. Vretenar·P. Ring
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Abstract

The matrix equations of the random-phase approximation (RPA) are derived for the point-coupling Lagrangian of the relativistic mean-field (RMF) model. Fully consistent RMF plus (quasiparticle) RPA illustrative calculations of the isoscalar monopole, isovector dipole and isoscalar quadrupole response of spherical medium-heavy and heavy nuclei, test the phenomenological effective interactions of the point-coupling RMF model. A comparison with experiment shows that the best point-coupling effective interactions accurately reproduce not only ground-state properties, but also data on excitation energies of giant resonances.

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T. Niksic, D. Vretenar, P. Ring. 2005-06-14. Random-phase approximation based on relativistic point-coupling models. https://doi.org/10.1103/physrevc.72.014312

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