Finite- to zero-range relativistic mean-field interactions

Journal Article · Sat Mar 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.034302· OSTI ID:21189820

Niksic, T; Vretenar, D; Lalazissis, G A; Ring, P ^[1]

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1. Physics Department, Faculty of Science, University of Zagreb, 10000 Zagreb (Croatia) and Physik-Department der Technischen Universitaet Muenchen, D-85748 Garching (Germany)

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.

• OSTI ID: 21189820
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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