e-journal

Approximate symmetries in atomic nuclei from a large-scale shell-model perspective

---

In this paper, we review recent developments that aim to achieve further understanding of the structure of atomic nuclei, by capitalizing on exact symmetries as well as approximate symmetries found to dominate low-lying nuclear states. The findings confirm the essential role played by the Sp(3, R) symplectic symmetry to inform the interaction and the relevant model spaces in nuclear modeling. The significance of the Sp(3, R) symmetry for a description of a quantum system of strongly interacting particles naturally emerges from the physical relevance of its generators, which directly relate to particle momentum and position coordinates, and represent important observables, such as, the many-particle kinetic energy, the monopole operator, the quadrupole moment and the angular momentum. We show that it is imperative that shell-model spaces be expanded well beyond the current limits to accommodate particle excitations that appear critical to enhanced collectivity in heavier systems and to highly-deformed spatial structures, exemplified by the second 0+ state in 12C (the challenging Hoyle state) and 8Be. While such states are presently inaccessible by large-scale no-core shell models, symmetry-based considerations are found to be essential.

Keywords: Symplectic Sp(3,R) group; SU(3) group; group-theoretical approach to nuclear structure; symmetry-guided shell model; large deformation; collectivity; clusters

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

International Journal of Modern Physics E

No. Panggil

-

Penerbit

: World Scientific., 2015

Deskripsi Fisik

International Journal of Modern Physics E Vol. 24, No. 5 (2015) 1530005 (30 pages

Bahasa

English

ISBN/ISSN

DOI: 10.1142/S021830

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

Vol. 24, No. 5 (2015) 1530005

Subjek

KESEHATAN

Info Detail Spesifik

-

Pernyataan Tanggungjawab

Wati/Agus

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar