Time Delay Correlations and Resonances in 1D Disordered Systems

Abstract

The frequency dependent time delay correlation function $K(Ω)$ is studied analytically for a particle reflected from a finite one-dimensional disordered system. In the long sample limit $K(Ω)$ can be used to extract the resonance width distribution $ρ(Γ)$. Both quantities are found to decay algebraically as $Γ^{-ν}$, and $Ω^{-ν}$, $ν\simeq 1.25$ in a large range of arguments. Numerical calculations for the resonance width distribution in 1D non-Hermitian tight-binding model agree reasonably with the analytical formulas.