A New Type of Intensity Correlation in Random Media

TL;DR

This paper introduces a novel form of long-range intensity correlations in 3D disordered media, with infinite range and a magnitude dependent on wave properties, expanding understanding of wave behavior in complex systems.

Contribution

It identifies and characterizes a new type of intensity correlation in random media, revealing infinite-range correlations with specific magnitude scaling.

Findings

Correlation range is infinite.

Correlation magnitude scales as 1/(k_0 * bb).

New correlation type extends understanding of wave propagation in disordered media.

Abstract

A monochromatic point source, embedded in a three-dimensional disordered medium, is considered. The resulting intensity pattern exhibits a new type of long-range correlations. The range of these correlations is infinite and their magnitude, normalized to the average intensity, is of order $1/k_0 \ell$, where $k_0$ and $\ell$ are the wave number and the mean free path respectively.