Beyond the relativistic mean-field approximation. II. Configuration mixing of mean-field wave functions projected on angular momentum and particle number

Nikšić, Tamara and Vretenar, Dario and Ring, Peter (2006) Beyond the relativistic mean-field approximation. II. Configuration mixing of mean-field wave functions projected on angular momentum and particle number. Physical Review C, 74 (6). pp. 64309-14. ISSN 0556-2813

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Abstract

The framework of relativistic self-consistent mean-field models is extended to include correlations related to the restoration of broken symmetries and to fluctuations of collective variables. The generator coordinate method is used to perform configuration mixing of angular-momentum and particle- number projected relativistic wave functions. The geometry is restricted to axially symmetric shapes, and the intrinsic wave functions are generated from the solutions of the relativistic mean-field+Lipkin-Nogami BCS equations, with a constraint on the mass quadrupole moment. The model employs a relativistic point-coupling (contact) nucleon-nucleon effective interaction in the particle-hole channel, and a density-independent - interaction in the pairing channel. Illustrative calculations are performed for 24Mg, 32S, and 36Ar, and compared with results obtained employing the model developed in the first part of this work, i.e., without particle-number projection, as well as with the corresponding nonrelativistic models based on Skyrme and Gogny effective interactions.

Item Type: Article
Date: December 2006
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: Copyright (2006) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-1191005-1010
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 24 May 2014 13:46
Last Modified: 24 May 2014 13:46
URI: http://digre.pmf.unizg.hr/id/eprint/1674

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