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Superscars in billiards: A model for doorway states in quantum spectra

Åberg, Sven LU ; Guhr, Thomas LU ; Miski-Oglu, Maksim and Richter, Achim (2008) In Physical Review Letters 100(20).
Abstract
In a unifying way, the doorway mechanism explains spectral properties in a rich variety of open mesoscopic quantum systems, ranging from atoms to nuclei. A distinct state and a background of other states couple to each other which sensitively affects the strength function. The recently measured superscars in the barrier billiard provide an ideal model for an in-depth investigation of this mechanism. We introduce two new statistical observables: the full distribution of the maximum coupling coefficient to the doorway and directed spatial correlators. Using random matrix theory and random plane waves, we obtain a consistent understanding of the experimental data.
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ISOSPIN SYMMETRY, SYSTEMS, EIGENFUNCTIONS, STRENGTH
in
Physical Review Letters
volume
100
issue
20
article number
204101
publisher
American Physical Society
external identifiers
  • wos:000256206400032
  • scopus:44349103655
ISSN
1079-7114
DOI
10.1103/PhysRevLett.100.204101
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)
id
b2af4000-e321-4121-8273-a6fcc17d9cdc (old id 1245800)
date added to LUP
2016-04-01 11:50:16
date last changed
2022-01-26 18:58:01
@article{b2af4000-e321-4121-8273-a6fcc17d9cdc,
  abstract     = {{In a unifying way, the doorway mechanism explains spectral properties in a rich variety of open mesoscopic quantum systems, ranging from atoms to nuclei. A distinct state and a background of other states couple to each other which sensitively affects the strength function. The recently measured superscars in the barrier billiard provide an ideal model for an in-depth investigation of this mechanism. We introduce two new statistical observables: the full distribution of the maximum coupling coefficient to the doorway and directed spatial correlators. Using random matrix theory and random plane waves, we obtain a consistent understanding of the experimental data.}},
  author       = {{Åberg, Sven and Guhr, Thomas and Miski-Oglu, Maksim and Richter, Achim}},
  issn         = {{1079-7114}},
  keywords     = {{ISOSPIN SYMMETRY; SYSTEMS; EIGENFUNCTIONS; STRENGTH}},
  language     = {{eng}},
  number       = {{20}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Superscars in billiards: A model for doorway states in quantum spectra}},
  url          = {{http://dx.doi.org/10.1103/PhysRevLett.100.204101}},
  doi          = {{10.1103/PhysRevLett.100.204101}},
  volume       = {{100}},
  year         = {{2008}},
}