Finite- to zero-range relativistic mean-field interactions
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 -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.
Cite
@article{arxiv.0802.2442,
title = {Finite- to zero-range relativistic mean-field interactions},
author = {T. Niksic and D. Vretenar and G. A. Lalazissis and P. Ring},
journal= {arXiv preprint arXiv:0802.2442},
year = {2008}
}
Comments
25 pages, 5 figures, accepted for publication in Physical Review C