dorsal/arxiv
View SchemaBand Structures of $^{182}$ Os Studied by GCM based on 3D-CHFB
| Authors | Takatoshi Horibata, Makito Oi, Naoki Onishi, Ahmad Ansari |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9809019 |
| URL | https://arxiv.org/abs/nucl-th/9809019 |
| DOI | 10.1016/S0375-9474(98)00642-3 |
| Journal | Nucl.Phys. A646 (1999) 277-295; Erratum-ibid. A651 (1999) 435-436 |
Abstract
Band structure properties of $^{182}$Os are investigated through a particle number and angular momentum constrained generator coordinate(GCM) calculation based on self-consistent three-dimensional cranking solutions. From the analysis of the wave function of the lowest GCM solution, we confirm that this nucleus shows a tilted rotational motion in its yrast states, at least with the present set of force parameters of the pairing-plus-quadrupole interaction Hamiltonian. A close examination of behavior of other GCM solutions reveals a sign of a possible occurrence of multi-band crossing in the nucleus. Furthermore, in the course of calculations, we have also found a new potential curve along the prime meridian on the globe of the $J=18\hbar$ sphere. Along this new solution the characters of proton and neutron gap parameters get interchanged. Namely, $\Delta_p$ almost vanishes while $\Delta_n$ grows to a finite value close to the one corresponding to the principal axis rotation(PAR). A state in the new solution curve at the PAR point turns out to have almost the same characteristic features of an yrare $s$-band state which gets located just above the $g$-band in our calculation. This fact suggests a new type of seesaw vibrational mode of the proton and the neutron pairing, occurring through a wobbling motion. The mode is considered to bridge the $g$-band states and the $s$-band states in the backbending region.
{
"annotation_id": "23c764d3-6689-49ad-8890-f98d2f7bd3b5",
"date_created": "2026-03-02T18:00:22.446000Z",
"date_modified": "2026-03-02T18:00:22.446000Z",
"file_hash": "78a3e4b656f3b2c9e2db25759b8f283f77df686fc677c64115dbceb98b9cd625",
"private": false,
"record": {
"abstract": "Band structure properties of $^{182}$Os are investigated through a particle\nnumber and angular momentum constrained generator coordinate(GCM) calculation\nbased on self-consistent three-dimensional cranking solutions. From the\nanalysis of the wave function of the lowest GCM solution, we confirm that this\nnucleus shows a tilted rotational motion in its yrast states, at least with the\npresent set of force parameters of the pairing-plus-quadrupole interaction\nHamiltonian. A close examination of behavior of other GCM solutions reveals a\nsign of a possible occurrence of multi-band crossing in the nucleus.\nFurthermore, in the course of calculations, we have also found a new potential\ncurve along the prime meridian on the globe of the $J=18\\hbar$ sphere. Along\nthis new solution the characters of proton and neutron gap parameters get\ninterchanged. Namely, $\\Delta_p$ almost vanishes while $\\Delta_n$ grows to a\nfinite value close to the one corresponding to the principal axis\nrotation(PAR). A state in the new solution curve at the PAR point turns out to\nhave almost the same characteristic features of an yrare $s$-band state which\ngets located just above the $g$-band in our calculation. This fact suggests a\nnew type of seesaw vibrational mode of the proton and the neutron pairing,\noccurring through a wobbling motion. The mode is considered to bridge the\n$g$-band states and the $s$-band states in the backbending region.",
"arxiv_id": "nucl-th/9809019",
"authors": [
"Takatoshi Horibata",
"Makito Oi",
"Naoki Onishi",
"Ahmad Ansari"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0375-9474(98)00642-3",
"journal_ref": "Nucl.Phys. A646 (1999) 277-295; Erratum-ibid. A651 (1999) 435-436",
"title": "Band Structures of $^{182}$ Os Studied by GCM based on 3D-CHFB",
"url": "https://arxiv.org/abs/nucl-th/9809019"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "83dce9e3-937b-40f1-a22d-9e0145994cba",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}