Fluctuations of local density of states and C0 speckle correlations are equal

B. van Tiggelen (1) , S. E. Skipetrov (1)

1 LPM2C - Laboratoire de physique et modélisation des milieux condensés

We establish a conceptual relation between the fluctuations of the local density of states (LDOS) and intensity correlations in speckle patterns resulting from multiple scattering of waves in random media. We show that among known types of speckle correlations (C1, C2, C3, and C0) only C0 contributes to LDOS fluctuations in the infinite medium. We propose to exploit the equivalence of LDOS fluctuations and C0 intensity correlation as a `selection rule' for scattering processes contributing to C0.

Domaines: Systèmes désordonnés et réseaux de neurones [cond-mat.dis-nn]; Systèmes mésoscopiques et effet Hall quantique [cond-mat.mes-hall]

B. van Tiggelen, S. E. Skipetrov. Fluctuations of local density of states and C0 speckle correlations are equal. Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2006, 73, pp.045601. ⟨10.1103/PhysRevE.73.045601⟩. ⟨hal-00372961⟩