Beyond the relativistic mean-field approximation: Configuration mixing of angular-momentum-projected wave functions

Scientific paper - Original scientific paper

• Author: Tamara Nikšić
• Author: Dario Vretenar
• Author: Peter Ring
• Author's institution: University of Zagreb; Faculty of Science; (Department of Physics)
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Physics

Abstract (english)

We report the first study of restoration of rotational symmetry and fluctuations of the quadrupole deformation in the framework of relativistic mean-field models. A model is developed that uses the generator coordinate method to perform configuration mixing calculations of angular-momentum-projected wave functions, calculated in a relativistic point-coupling model. The geometry is restricted to axially symmetric shapes, and the intrinsic wave functions are generated from the solutions of the constrained relativistic mean-field + BCS equations in an axially deformed oscillator basis. A number of illustrative calculations are performed for the nuclei 194Hg and 32Mg, in comparison with results obtained in nonrelativistic models based on Skyrme and Gogny effective interactions.

• Keywords (english): Hartree-Fock and random-phase approximations in nuclei; nuclear single-particle levels and strength functions; nuclear collective levels; forces in hadronic systems and nuclear effective interactions
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Physical Review C - Nuclear Physics
• Numbering: vol. 73, no. 3, 034308
• p-ISSN: 0556-2813
• e-ISSN: 1089-490X
• DOI: https://doi.org/10.1103/PhysRevC.73.034308
• URN:NBN: urn:nbn:hr:217:775897
• Publication: 2006
• Document URL: http://link.aps.org/doi/10.1103/PhysRevC.73.034308
• Type of resource: Text
• Access conditions: Open access
• Public note: Copyright (2006) by the American Physical Society.
• Created on: 2019-10-15 18:16:23