Quantal rotation and its coupling to intrinsic motion in nuclei

Takashi Nakatsukasa, Kenichi Matsuyanagi, Masayuki Matsuzaki, Yoshifumi Shimizu

研究成果: ジャーナルへの寄稿評論記事

5 引用 (Scopus)

抄録

Symmetry breaking is an important concept in nuclear physics and other fields of physics. Self-consistent coupling between the mean-field potential and the single-particle motion is a key ingredient in the unified model of Bohr and Mottelson, which could lead to a deformed nucleus as a consequence of spontaneous breaking of the rotational symmetry. Some remarks on the finite-size quantum effects are given. In finite nuclei, the deformation inevitably introduces the rotation as a symmetry-restoring collective motion (Anderson-Nambu-Goldstone mode), and the rotation affects the intrinsic motion. In order to investigate the interplay between the rotational and intrinsic motions in a variety of collective phenomena, we use the cranking prescription together with the quasiparticle random phase approximation (QRPA). At low spin, the coupling effect can be seen in the generalized intensity relation. A feasible quantization of the cranking model is presented, which provides a microscopic approach to the higher-order intensity relation. At high spin, the semiclassical cranking prescription works well. We discuss properties of collective vibrational motions under rapid rotation and/or large deformation. The superdeformed shell structure plays a key role in emergence of a new soft mode which could lead to instability toward the octupole shape. A wobbling mode of excitation, which is a clear signature of the triaxiality, is discussed in terms of a microscopic point of view. A crucial role played by the quasiparticle alignment is presented.

元の言語英語
記事番号073008
ジャーナルPhysica Scripta
91
発行部数7
DOI
出版物ステータス出版済み - 6 27 2016

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Nucleus
Collective Motion
Quasiparticles
nuclei
Motion
Physics
Shell Structure
Rotational symmetry
Quantum Effects
Size Effect
Large Deformation
Symmetry Breaking
triaxial stresses
Mean Field
Quantization
Alignment
particle motion
symmetry
potential fields
Signature

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Mathematical Physics
  • Condensed Matter Physics

これを引用

Nakatsukasa, T., Matsuyanagi, K., Matsuzaki, M., & Shimizu, Y. (2016). Quantal rotation and its coupling to intrinsic motion in nuclei. Physica Scripta, 91(7), [073008]. https://doi.org/10.1088/0031-8949/91/7/073008

Quantal rotation and its coupling to intrinsic motion in nuclei. / Nakatsukasa, Takashi; Matsuyanagi, Kenichi; Matsuzaki, Masayuki; Shimizu, Yoshifumi.

:: Physica Scripta, 巻 91, 番号 7, 073008, 27.06.2016.

研究成果: ジャーナルへの寄稿評論記事

Nakatsukasa, T, Matsuyanagi, K, Matsuzaki, M & Shimizu, Y 2016, 'Quantal rotation and its coupling to intrinsic motion in nuclei', Physica Scripta, 巻. 91, 番号 7, 073008. https://doi.org/10.1088/0031-8949/91/7/073008
Nakatsukasa T, Matsuyanagi K, Matsuzaki M, Shimizu Y. Quantal rotation and its coupling to intrinsic motion in nuclei. Physica Scripta. 2016 6 27;91(7). 073008. https://doi.org/10.1088/0031-8949/91/7/073008
Nakatsukasa, Takashi ; Matsuyanagi, Kenichi ; Matsuzaki, Masayuki ; Shimizu, Yoshifumi. / Quantal rotation and its coupling to intrinsic motion in nuclei. :: Physica Scripta. 2016 ; 巻 91, 番号 7.
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