Understanding nuclear dynamics in the SD-pair shell model: From pre-vibration to collective rotation

. Influences of some important residual interactions considered in the shell model on nuclear dynamics and the shape phase evolution have been investigated in the SD-pair shell model for an identical nucleon system. The results indicate that the collective modes including the spherical vibration, pr...

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Bibliographic Details
Published in:The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2019-08, Vol.55 (8), p.1-7, Article 143
Main Authors: He, Bing-Cheng, Zhang, Si-Yao, Zhang, Yu, Luo, Yan-An, Pan, F., Draayer, J. P.
Format: Article
Language:English
Subjects:
Hadrons
Heavy Ions
Nuclear Fusion
Nuclear Physics
Nucleons
Particle and Nuclear Physics
Phase transitions
Physics
Physics and Astronomy
Quadrupole interaction
Quadrupoles
Regular Article - Theoretical Physics
Rotating spheres
Rotation
Rotational spectra
Vibration
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Summary:. Influences of some important residual interactions considered in the shell model on nuclear dynamics and the shape phase evolution have been investigated in the SD-pair shell model for an identical nucleon system. The results indicate that the collective modes including the spherical vibration, prolate rotation, and X(5)-like critical dynamics are mainly driven by the competition between the monopole-pairing interaction and the quadrupole-quadrupole interaction, and the main features of the U(5)-SU(3) phase transition can be well reproduced within the SD-pair model. In addition, it is also shown that the quadrupole-pairing interaction cannot be ignored in reproducing an ideal rotational spectrum with a realistic single-particle configuration.
ISSN:1434-6001
1434-601X
DOI:10.1140/epja/i2019-12835-x