1999/09/22 by Sandeep K. Joshi, Joshi, Sandeep K., Debendranath Sahoo +3
Computer Science · Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #cond-mat.dis-nn
paper · pdf · doi:10.48550/arxiv.cond-mat/9909327
RevTex, 6 pages,2 column format, 9 .eps figures included
arxiv created 1999/09/22 · openalex publication_date 1999/09/22 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report a detailed and systematic study of wave propagation through a stochastic absorbing random medium. Stochastic absorption is modeled by introducing an attenuation constant per unit length α in the free propagation region of the one-dimensional disordered chain of delta function scatterers. The average value of the logarithm of transmission coefficient decreases linearly with the length of the sample. The localization length is given by ξ~ = ~ ξw ξα/ (ξw + ξα), where ξw and ξα are the localization lengths in the presence of only disorder and of only absorption respectively. Absorption does not introduce any additional reflection in the limit of large α, i.e., reflection shows a monotonic decrease with α and tends to zero in the limit of α→∞, in contrast to the behavior observed in case of coherent absorption. The stationary distribution of reflection coefficient agrees well with the analytical results obtained within random phase approximation (RPA) in a larger parameter space. We also emphasize the major differences between the results of stochastic and coherent absorption.