Abstract
We introduce a technique of simulating the destruction of mesoscopic conductance fluctuations phenomenologically within the nonlinear δ-formalism. A similar approach has already been applied within diagrammatic models. Dephasing is generated by adding a second random potential to the Hamilton operator which differs from the potential describing the metallic disorder only in its statistical properties. For that reason, the approach cannot serve to describe physical effects relying on dynamic aspects of dephasing interactions (e.g. the destruction of weak localization effects). The technique is introduced within the framework of a scattering-theoretical model of mesoscopic systems.
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Altland, A. Dephasing effects in nonlinear δ-models: A phenomenological approach. Z. Physik B - Condensed Matter 86, 101–109 (1992). https://doi.org/10.1007/BF01323554
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DOI: https://doi.org/10.1007/BF01323554