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An exact mapping of the classical wave problem to that of electronic motion is utilized together with extensive numerical results to examine the question of the existence of genuine localization (i. e. , one occurring when both components have real positive dielectric constants) of classical waves in random binary alloys A₁-ₗBₗ. We find that scalar waves do exhibit localization. We have also developed a coherent potential approximation which for x<0. 2 gives results not that much different from the numerical ones. This result can be easily generalized to electromagnetic fields as well.
Soukoulis et al. (Mon,) studied this question.