The relativistic Hartree-Bogoliubov (RHB) model is extended to include density-dependent meson-nucleon vertex functions. Compared with standard relativistic mean-field effective interactions with non-linear meson-exchange terms, the density-dependent meson-nucleon couplings provide an improved description of asymmetric nuclear matter, neutron matter and nuclei far from stability. The relativistic quasiparticle random-phase approximation (RQRPA) is formulated in the canonical single-nucleon basis of the relativistic Hartree-Bogoliubov (RHB) model. Both in the particle-hole and particle-particle channels, the same interactions are used in the RHB calculation of the ground state and in the matrix equations of the RQRPA. The RHB+RQRPA is employed in the analysis of multipole excitations of neutron-rich oxygen isotopes.

D. Vretenar, T. Niksic, P. Ring, N. Paar, G. A. Lalazissis, P. Finelli (2004). Relativistic Hartree-Bogoliubov and QRPA description of exotic nuclear structure. THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI, 20, 75-80 [10.1140/epja/i2002-10325-0].

Relativistic Hartree-Bogoliubov and QRPA description of exotic nuclear structure

FINELLI, PAOLO
2004

Abstract

The relativistic Hartree-Bogoliubov (RHB) model is extended to include density-dependent meson-nucleon vertex functions. Compared with standard relativistic mean-field effective interactions with non-linear meson-exchange terms, the density-dependent meson-nucleon couplings provide an improved description of asymmetric nuclear matter, neutron matter and nuclei far from stability. The relativistic quasiparticle random-phase approximation (RQRPA) is formulated in the canonical single-nucleon basis of the relativistic Hartree-Bogoliubov (RHB) model. Both in the particle-hole and particle-particle channels, the same interactions are used in the RHB calculation of the ground state and in the matrix equations of the RQRPA. The RHB+RQRPA is employed in the analysis of multipole excitations of neutron-rich oxygen isotopes.
2004
D. Vretenar, T. Niksic, P. Ring, N. Paar, G. A. Lalazissis, P. Finelli (2004). Relativistic Hartree-Bogoliubov and QRPA description of exotic nuclear structure. THE EUROPEAN PHYSICAL JOURNAL. A, HADRONS AND NUCLEI, 20, 75-80 [10.1140/epja/i2002-10325-0].
D. Vretenar; T. Niksic; P. Ring; N. Paar; G. A. Lalazissis; P. Finelli
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/110851
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