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

Znanstveni rad - Izvorni znanstveni rad

• Autor: Tamara Nikšić
• Autor: Dario Vretenar
• Autor: Peter Ring
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

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.

• Ključne riječi (engleski): 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
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Physical Review C - Nuclear Physics
• Brojčani podaci: vol. 73, br. 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
• Datum objave publikacije: 2006
• URL dokumenta: http://link.aps.org/doi/10.1103/PhysRevC.73.034308
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: Copyright (2006) by the American Physical Society.
• Datum i vrijeme pohrane: 2019-10-15 18:16:23