"Optical conductance fluctuations: diagrammatic analysis in Landauer approach and non-universal effects"

Details "Optical conductance fluctuations: diagrammatic analysis in Landauer approach and non-universal effects" "Optical conductance fluctuations: diagrammatic analysis in Landauer approach and non-universal effects"

1994-12-08

arxiv.org/abs/cond-mat/9412040v1

Physics

Condensed Matter

25 pages Revtex 3.0, 18 seperate postscript figures

Scientific paper

10.1103/PhysRevE.51.6158

The optical conductance of a multiple scattering medium is the total transmitted light of a diffuse incoming beam. This quantity, very analogous to the 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 applied to optical systems. Absorption and internal reflections reduce the fluctuations significantly.

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