https://doi.org/10.1140/epja/i2019-12835-x
Regular Article - Theoretical Physics
Understanding nuclear dynamics in the SD-pair shell model: From pre-vibration to collective rotation
1
School of Physics, Nankai University, 300071, Tianjin, P. R. China
2
Department of Physics, Liaoning Normal University, 116029, Dalian, P. R. China
3
Department of Physics and Astronomy, Louisiana State University, 70803-4001, Baton Rouge, LA, USA
* e-mail: dlzhangyu_physics@163.com
Received:
12
June
2019
Accepted:
23
July
2019
Published online:
30
August
2019
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.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
