Nonlinear statistics of quantum transport in chaotic cavities

Details Nonlinear statistics of quantum transport in chaotic cavities Nonlinear statistics of quantum transport in chaotic cavities

2007-11-12

arxiv.org/abs/0711.1764v1

Phys. Rev. B 77, 125332 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 figure

Scientific paper

10.1103/PhysRevB.77.125332

In the framework of the random matrix approach, we apply the theory of Selberg's integral to problems of quantum transport in chaotic cavities. All the moments of transmission eigenvalues are calculated analytically up to the fourth order. As a result, we derive exact explicit expressions for the skewness and kurtosis of the conductance and transmitted charge as well as for the variance of the shot-noise power in chaotic cavities. The obtained results are generally valid at arbitrary numbers of propagating channels in the two attached leads. In the particular limit of large (and equal) channel numbers, the shot-noise variance attends the universal value 1/(64\beta) that determines a universal Gaussian statistics of shot-noise fluctuations in this case.

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