Revisiting nuclear chirality in 128Cs with relativistic configuration-interaction density functional theory
Abstract
Nuclear chirality in 128Cs is revisited within the microscopic relativistic configuration-interaction density functional (ReCD) theory. The positive-parity doublet bands are investigated by simultaneously examining their energy spectra, electromagnetic transition probabilities, g factors, spectroscopic quadrupole moments, and underlying angular-momentum geometry. Without introducing additional parameters adjusted to the spectroscopic data, the ReCD calculations provide an overall satisfactory description of the available experimental observables. In particular, a comprehensive analysis of the available experimental data and the calculated spectroscopic observables indicates qualitative resemblances between the partner bands around I = 17ℏ. A microscopic analysis of the angular-momentum geometry through \textit{azimuthal plots} reveals a distinct evolution of the rotational mode with increasing spin: chiral vibration at I < 17ℏ, static chirality at I = 17ℏ, and a transition toward planar rotation at higher spins. These results suggest that static chiral geometry in 128Cs is confined to a narrow spin region around I = 17ℏ within the present ReCD calculations.
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BibTeX
@misc{wang2026revisiting,
title = {{Revisiting nuclear chirality in $^128$Cs with relativistic configuration-interaction density functional theory}},
author = {Yakun Wang},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.16615},
eprint = {2609.16615},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.16615},
note = {CC BY-NC-SA 4.0},
}
RIS
TY - UNPB
TI - Revisiting nuclear chirality in ^128Cs with relativistic configuration-interaction density functional theory
AU - Yakun Wang
PY - 2026
DA - 2026/09/15
PB - arXiv
DO - 10.48550/arxiv.2609.16615
UR - https://arxiv.org/abs/2609.16615
AB - Nuclear chirality in ^128Cs is revisited within the microscopic relativistic configuration-interaction density functional (ReCD) theory. The positive-parity doublet bands are investigated by simultaneously examining their energy spectra, electromagnetic transition probabilities, g factors, spectroscopic quadrupole moments, and underlying angular-momentum geometry. Without introducing additional parameters adjusted to the spectroscopic data, the ReCD calculations provide an overall satisfactory description of the available experimental observables. In particular, a comprehensive analysis of the available experimental data and the calculated spectroscopic observables indicates qualitative resemblances between the partner bands around I = 17ℏ. A microscopic analysis of the angular-momentum geometry through \textit{azimuthal plots} reveals a distinct evolution of the rotational mode with increasing spin: chiral vibration at I < 17ℏ, static chirality at I = 17ℏ, and a transition toward planar rotation at higher spins. These results suggest that static chiral geometry in ^128Cs is confined to a narrow spin region around I = 17ℏ within the present ReCD calculations.
ER -