High cumulants of current fluctuations out of equilibrium

D. Gutman, Y Gefen, AD Mirlin

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


We consider high order current cumulants in disordered systems out of equilibrium. They are interesting and reveal information which is not easily exposed by the traditional shot noise. Despite the fact that the dynamics of the electrons is classical, the standard kinetic theory of fluctuations needs to be modified to account for those cumulants. We perform a quantummechanical calculation using the Keldysh technique and analyze its relation to the quasi classical Boltzmann-Langevin scheme. We also consider the effect of inelastic scattering. Strong electronphonon scattering renders the current fluctuations Gaussian, completely suppressing the n > 2 cumulants. Under strong electron-electron scattering the current fluctuations remain non-Gaussian.
Original languageAmerican English
Title of host publicationProceedings of the NATO ARW on Quantum Noise in Mesoscopic Physics
EditorsNazarov YV
Place of PublicationDelft, The Netherlands
StatePublished - 2003

Publication series

NameNATO Science Series


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