Kinetic Theory and Mesoscopic Noise

Details Kinetic Theory and Mesoscopic Noise Kinetic Theory and Mesoscopic Noise

1999-10-13

arxiv.org/abs/cond-mat/9910183v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

source: TeX. Output: 13 pp. No figs. Based on work presented at 23rd International Workshop in Condensed Matter Theories, Itha

Scientific paper

In the theory of noise processes for mesoscopic conductors, the relationship between shot noise and hot-electron noise is absolutely fundamental to understanding the underlying microscopic fluctuations. From the vantage point of orthodox microscopics and kinetics, their relation is a long way from being settled. Its resolution calls for the tools of many-body theory. We motivate the many-body approach to noise, review the analysis of conductance and current noise within linear diffusive theories, and discuss the smooth crossover between thermal noise and shot noise. We outline a kinetic theory of nonequilibrium fluctuations, and show how this completely orthodox approach directly negates drift-diffusive explanations of the crossover.

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