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Relativistic Hartree-Bogoliubov and QRPA description of exotic nuclear structure

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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.

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Authors and Affiliations

  1. Physics Department, Faculty of Science, University of Zagreb, 10 000, Zagreb, Croatia

    D. Vretenar & T. Nikšić

  2. Physik-Department der Technischen Universität München, D-85748, Garching, Germany

    P. Ring & N. Paar

  3. Department of Theoretical Physics, Aristotle University of Thessaloniki, GR-54124, Thessaloniki, Greece

    G. A. Lalazissis

  4. Dipartimento di Fisica, Universitá di Bologna, and INFN-Bologna, I-40126, Bologna, Italy

    P. Finelli

Authors
  1. D. Vretenar
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  2. T. Nikšić
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  3. P. Ring
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  4. N. Paar
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  5. G. A. Lalazissis
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  6. P. Finelli
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Corresponding author

Correspondence to D. Vretenar.

Additional information

Received: 30 October 2002, Published online: 24 February 2004

PACS:

21.30.Fe Forces in hadronic systems and effective interactions - 21.60.Jz Hartree-Fock and random-phase approximations

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Vretenar, D., Nikšić, T., Ring, P. et al. Relativistic Hartree-Bogoliubov and QRPA description of exotic nuclear structure. Eur. Phys. J. A 20, 75–80 (2003). https://doi.org/10.1140/epja/i2002-10325-0

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  • DOI: https://doi.org/10.1140/epja/i2002-10325-0

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