Published August 7, 1997
| Version v1
Journal article
Double poles of the S-matrix in a two-channel model
- 1. Departement Wiskunde-Informatica, Universiteit Antwerpen, Antwerpen (Belgium)
- 2. Departement Natuurkunde, Vrije Universiteit Brussel, Brussel (Belgium)
Description
The poles of the S-matrix for a two-channel model with square well potentials are calculated. It is found that the trajectories of these poles in the complex k-plane for varying coupling strength show avoided crossings. At the critical parameters the poles coincide to form a double pole. Its presence is revealed by a symmetry property of the cross section. (author)
Availability note (English)
Available online at the Web site for the Journal of Physics. A, Mathematical and General (ISSN 4361-6447) http://www.iop.org/Additional details
Identifiers
- URL
- http://www.iop.org/;
Publishing Information
- Journal Title
- Journal of Physics. A, Mathematical and General
- Journal Volume
- 30
- Journal Issue
- 15
- Journal Page Range
- p. 5543-5549
- ISSN
- 0305-4470
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- Syrian Arab Republic
- INIS RN
- 32053417
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- COUPLED CHANNEL THEORY; CROSS SECTIONS; S MATRIX; SQUARE-WELL POTENTIAL; SYMMETRY; TRAJECTORIES
- Descriptors DEC
- MATRICES; NUCLEAR POTENTIAL; POTENTIALS