title: Polarizability fluctuations in dielectric materials with quenched disorder
abstract: We study a model of dielectric response for spatially disordered materials. In this model the local polarizability alpha(r) is a quenched random variable. From a one-loop level renormalization-group analysis, we predict that with increasing length scale L, the dimensionless fluctuation strength alpha;sigma, where 1/alpha; and sigma(2) are the average and the variance of the distribution for 1/alpha(r), decays as 1/L(2) universally at large length scales. The interplay of the random polarizability and the long-range dipole-dipole interaction is discussed.
authors.affiliation: Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA.
authors.initials: ZG
authors.lastname: Yu
authors.initials: X
authors.lastname: Song
authors.initials: D
authors.lastname: Chandler