Random-phase approximation based on relativistic point-coupling models

Journal Article · Fri Jul 01 00:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.014312· OSTI ID:20698827

Niksic, T; Vretenar, D; Ring, P ^[1]

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

The matrix equations of the random-phase approximation (RPA) are derived for the point-coupling Lagrangian of the relativistic mean-field (RMF) model. Fully consistent RMF plus (quasiparticle) RPA illustrative calculations of the isoscalar monopole, isovector dipole, and isoscalar quadrupole response of spherical medium-heavy and heavy nuclei test the phenomenological effective interactions of the point-coupling RMF model. A comparison with experiment shows that the best point-coupling effective interactions accurately reproduce not only ground-state properties but also data on excitation energies of giant resonances.

• OSTI ID: 20698827
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 72, Issue 1; Other Information: DOI: 10.1103/PhysRevC.72.014312; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
COUPLING
DIPOLES
EXCITATION
GIANT RESONANCE
GROUND STATES
HEAVY NUCLEI
ISOVECTORS
LAGRANGIAN FUNCTION
MEAN-FIELD THEORY
QUADRUPOLES
RANDOM PHASE APPROXIMATION
RELATIVISTIC RANGE