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Optical conductance fluctuations: Diagrammatic analysis in the Landauer approach and nonuniversal effects

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Original languageEnglish
Pages (from-to)6158-6176
Number of pages19
JournalPhysical Review E - Statistical, Nonlinear and Soft Matter Physics
Issue number6
Publication statusPublished - 1 Jun 1995


The optical conductance of a multiple scattering medium is defined as the total transmitted light of a normalized diffuse incoming beam. This quantity, analogous to electronic conductance, exhibits universal conductance fluctuations. We perform a detailed diagrammatic analysis of these fluctuations. With a Kadanoff-Baym technique all the leading diagrams are systematically generated. A cancellation of the short distance divergencies occurs that yields a well behaved theory. The analytical form of the fluctuations is calculated and the theory is applied to optical systems. Absorption and internal reflections, which are taken into account, reduce the fluctuations significantly

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