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Chiral bands, dynamical spontaneous symmetry breaking, and the selection rule for electromagnetic transitions in the chiral geometry

Koike, T; Starosta, K and Hamamoto-Kuroda, Ikuko LU (2004) In Physical Review Letters 93(17).
Abstract
A model for a special configuration in triaxial odd-odd nuclei is constructed which exhibits degenerate chiral bands with a sizable rotation, a manifestation of dynamical spontaneous symmetry breaking. A quantum number obtained from the invariance of the model Hamiltonian, which characterizes observable states, is given and selection rules for electromagnetic transition probabilities in chiral bands is derived in terms of this quantum number. The degeneracy of the lowest two bands is indeed obtained in the numerical diagonalization of the Hamiltonian at an intermediate spin range, over which electromagnetic transitions follow exactly the selection rule expected for the chiral geometry.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
93
issue
17
publisher
American Physical Society
external identifiers
  • wos:000224662700020
  • scopus:19744381496
ISSN
1079-7114
DOI
10.1103/PhysRevLett.93.172502
language
English
LU publication?
yes
id
eec40e5b-45fd-4be4-bf99-28c02be204b6 (old id 263648)
date added to LUP
2007-10-23 19:01:26
date last changed
2017-10-01 03:41:23
@article{eec40e5b-45fd-4be4-bf99-28c02be204b6,
  abstract     = {A model for a special configuration in triaxial odd-odd nuclei is constructed which exhibits degenerate chiral bands with a sizable rotation, a manifestation of dynamical spontaneous symmetry breaking. A quantum number obtained from the invariance of the model Hamiltonian, which characterizes observable states, is given and selection rules for electromagnetic transition probabilities in chiral bands is derived in terms of this quantum number. The degeneracy of the lowest two bands is indeed obtained in the numerical diagonalization of the Hamiltonian at an intermediate spin range, over which electromagnetic transitions follow exactly the selection rule expected for the chiral geometry.},
  articleno    = {172502},
  author       = {Koike, T and Starosta, K and Hamamoto-Kuroda, Ikuko},
  issn         = {1079-7114},
  language     = {eng},
  number       = {17},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Chiral bands, dynamical spontaneous symmetry breaking, and the selection rule for electromagnetic transitions in the chiral geometry},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.93.172502},
  volume       = {93},
  year         = {2004},
}