Reflectance Fluctuations in an Absorbing Random Waveguide
| dc.creator | Misirpashaev, T. Sh. | |
| dc.creator | Beenakker, C. W. J. | |
| dc.date | 1996-07-17 | |
| dc.date.accessioned | 2026-07-07T03:08:44Z | |
| dc.date.available | 2026-07-07T03:08:44Z | |
| dc.description | We study the statistics of the reflectance (the ratio of reflected and incident intensities) of an $N$-mode disordered waveguide with weak absorption $γ$ per mean free path. Two distinct regimes are identified. The regime $γN^2\gg1$ shows universal fluctuations. With increasing length $L$ of the waveguide, the variance of the reflectance changes from the value $2/15 N^2$, characteristic for universal conductance fluctuations in disordered wires, to another value $1/8 N^2$, characteristic for chaotic cavities. The weak-localization correction to the average reflectance performs a similar crossover from the value $1/3 N$ to $1/4 N$. In the regime $γN^2\ll1$, the large-$L$ distribution of the reflectance $R$ becomes very wide and asymmetric, $P(R)\propto (1-R)^{-2}$ for $R\ll 1-γN$. | |
| dc.description | 7 pages, RevTeX, 2 postscript figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9607119 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9607119 | |
| dc.identifier | Pis'ma ZhETF 64, 289-293 (1996) [JETP Lett. 64, 319-324 (1996)] | |
| dc.identifier | doi:10.1134/1.567190 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/27614 | |
| dc.subject | Condensed Matter | |
| dc.title | Reflectance Fluctuations in an Absorbing Random Waveguide | |
| dc.type | text |