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Title: Finite- to zero-range relativistic mean-field interactions

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 {sigma}-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.
Authors:
; ; ;  [1] ;  [2] ;  [3]
  1. Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb (Croatia) and Physik-Department der Technischen Universitaet Muenchen, D-85748 Garching (Germany)
  2. (Greece)
  3. (Germany)
Publication Date:
OSTI Identifier:
21189820
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 77; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.77.034302; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; BOSON-EXCHANGE MODELS; COLLECTIVE EXCITATIONS; COUPLING; GROUND STATES; INTERACTIONS; ISOVECTORS; MASS; MEAN-FIELD THEORY; MESON-NUCLEON INTERACTIONS; MESONS; NUCLEAR MATTER; NUCLEI; NUCLEONS; RELATIVISTIC RANGE; SCALARS