Finite- to zero-range relativistic mean-field interactions

Nikšić, Tamara and Vretenar, Dario and Lalazissis, G. A. and Ring, Peter (2008) Finite- to zero-range relativistic mean-field interactions. Physical Review C, 77 (3). pp. 34302-10. ISSN 0556-2813

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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.

Item Type: Article
Keywords: forces in hadronic systems and nuclear effective interactions, nuclear density functional theory and extensions
Date: March 2008
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2008) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191005-1010
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 29 May 2014 19:24
Last Modified: 29 May 2014 19:24
URI: http://digre.pmf.unizg.hr/id/eprint/1963

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