| Issue |
EPL
Volume 99, Number 5, September 2012
|
|
|---|---|---|
| Article Number | 54002 | |
| Number of page(s) | 6 | |
| Section | Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics | |
| DOI | https://doi.org/10.1209/0295-5075/99/54002 | |
| Published online | 14 September 2012 | |
Doorway states in quasi–one-dimensional elastic systems
1 Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México - P.O. Box 48-3, 62251 Cuernavaca Mor., México
2 Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana-Azcapotzalco - Av. San Pablo 180, Col. Reynosa Tamaulipas, 02200 México D. F., México
3 Instituto de Física, Universidad Nacional Autónoma de México - P.O. Box 20-364, 01000 México, D. F., México
Received: 23 June 2012
Accepted: 10 August 2012
The doorway state phenomenon has been recently analysed in many different systems, both quantum and classical. The systems range from nuclei to sedimentary valleys, therefore covering a range in size of 19 orders of magnitude. It also applies to systems with chaotic spectra as well as to integrable systems. In all these works, the doorway state has been discussed only in the energy or frequency domains. In this letter we present numerical and experimental results for a quasi–one-dimensional elastic system which presents a doorway state and, for the first time, the temporal evolution of the phenomenon is measured directly.
PACS: 43.20.Fn – Scattering of acoustic waves / 24.30.Cz – Giant resonances / 43.40.At – Experimental and theoretical studies of vibrating systems
© EPLA, 2012
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