paper

Statistics of quantum transport in chaotic cavities with broken time-reversal symmetry

arXiv:0805.4590 · doi:10.1103/PhysRevB.78.035337

Abstract

The statistical properties of quantum transport through a chaotic cavity are encoded in the traces $\T={\rm Tr}(tt^†)^n$, where is the transmission matrix. Within the Random Matrix Theory approach, these traces are random variables whose probability distribution depends on the symmetries of the system. For the case of broken time-reversal symmetry, we present explicit closed expressions for the average value and for the variance of $\T$ for all . In particular, this provides the charge cumulants $\Q$ of all orders. We also compute the moments of the conductance . All the results obtained are exact, {\it i.e.} they are valid for arbitrary numbers of open channels.

5 pages, 4 figures. v2-minor changes

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