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arXiv · 0802.2442

Finite- to zero-range relativistic mean-field interactions

T. Niksic·D. Vretenar·G. A. Lalazissis·P. Ring
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Abstract

We study the relation between the finite-range (meson-exchange) and zero-range (point-coupling) representations of effective nuclear interactions in the relativistic mean-field framework. Starting from the phenomenological interaction DD-ME2 with density-dependent meson-nucleon couplings, we construct a family of point-coupling effective interactions for different values of the strength parameter of the isoscalar-scalar derivative term. In the meson-exchange picture this corresponds to different values of the $σ$-meson mass. The parameters of the isoscalar-scalar and isovector-vector channels of the point-coupling interactions are adjusted to nuclear matter and ground-state properties of finite nuclei. By comparing results for infinite and semi-infinite nuclear matter, ground-state masses, charge radii, and collective excitations, we discuss constraints on the parameters of phenomenological point-coupling relativistic effective interaction.

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T. Niksic, D. Vretenar, G. A. Lalazissis, P. Ring. 2008-03-06. Finite- to zero-range relativistic mean-field interactions. https://doi.org/10.1103/physrevc.77.034302

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