Local level statistics for optical and transport properties of disordered systems at finite temperature

TL;DR

This paper introduces local level statistics as a new approach to analyze incoherent transport and optical properties in disordered one-dimensional systems at finite temperature, addressing limitations of traditional global statistics.

Contribution

The paper proposes local level statistics as a novel method for studying finite temperature incoherent transport and optics in disordered systems, improving upon traditional global statistics.

Findings

Local level statistics are relevant for finite temperature incoherent transport.

Global level statistics are inadequate for describing incoherent transport.

The approach applies to systems like molecular aggregates and conjugated polymers.

Abstract

It is argued that the (traditional) global level statistics which determines localization and coherent transport properties of disordered systems at zero temperature (e.g. the Anderson model) becomes inappropriate when it comes to incoherent transport. We define local level statistics which proves to be relevant for finite temperature incoherent transport and optics of one-dimensional systems (e.g. molecular aggregates, conjugated polymers, etc.).