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Decay-out from SD states initiated by the onset of chaos

Åberg, Sven LU (1999) In Nuclear Physics A 649(1-4). p.392-402
Abstract

It is shown that the decay out from superdeformed bands is enhanced by several orders of magnitude due to the onset of chaos in normal deformed states. The onset of chaos is caused by the residual two-body interaction, that plays a crucial role for the normal deformed states at excitation energies where the decay out occurs (3-5 MeV). At these excitation energies the distribution of nearest neighbor energies is of GOE type, while long-range spectrum correlations (Δ3-statistics) may deviate from GOE for large energy distances. It is suggested that measurements of the distribution of decay-out matrix elements may reveal the degree of quantum chaos.

Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Nuclear Physics A
volume
649
issue
1-4
pages
11 pages
publisher
Elsevier
external identifiers
  • scopus:0033614186
ISSN
0375-9474
DOI
10.1016/S0375-9474(99)00089-5
language
English
LU publication?
yes
id
e148d631-0c89-461e-bf83-3286821fb0ca
date added to LUP
2025-09-02 14:24:16
date last changed
2025-10-14 12:12:31
@article{e148d631-0c89-461e-bf83-3286821fb0ca,
  abstract     = {{<p>It is shown that the decay out from superdeformed bands is enhanced by several orders of magnitude due to the onset of chaos in normal deformed states. The onset of chaos is caused by the residual two-body interaction, that plays a crucial role for the normal deformed states at excitation energies where the decay out occurs (3-5 MeV). At these excitation energies the distribution of nearest neighbor energies is of GOE type, while long-range spectrum correlations (Δ<sub>3</sub>-statistics) may deviate from GOE for large energy distances. It is suggested that measurements of the distribution of decay-out matrix elements may reveal the degree of quantum chaos.</p>}},
  author       = {{Åberg, Sven}},
  issn         = {{0375-9474}},
  language     = {{eng}},
  month        = {{03}},
  number       = {{1-4}},
  pages        = {{392--402}},
  publisher    = {{Elsevier}},
  series       = {{Nuclear Physics A}},
  title        = {{Decay-out from SD states initiated by the onset of chaos}},
  url          = {{http://dx.doi.org/10.1016/S0375-9474(99)00089-5}},
  doi          = {{10.1016/S0375-9474(99)00089-5}},
  volume       = {{649}},
  year         = {{1999}},
}