Localization of elastic waves in heterogeneous media with off-diagonal disorder and long-range correlations

Abstract

Using the Martin-Siggia-Rose method, we study propagation of acoustic waves in strongly heterogeneous media which are characterized by a broad distribution of the elastic constants. Gaussian-white distributed elastic constants, as well as those with long-range correlations with non-decaying power-law correlation functions, are considered. The study is motivated in part by a recent discovery that the elastic moduli of rock at large length scales may be characterized by long-range power-law correlation functions. Depending on the disorder, the renormalization group (RG) flows exhibit a transition to localized regime in {\it any} dimension. We have numerically checked the RG results using the transfer-matrix method and direct numerical simulations for one- and two-dimensional systems, respectively.

arXiv comment5 pages, 4 figures, to appear in Phys. Rev. Lett

References in corpus (1)

• Localization of classical waves in two dimensional random media: A comparison between the analytic theory and exact numerical simulation

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