Prof. Dmitri Ivanov (EPFL, Switzerland)
"Allowed charge transfers between coherent conductors driven by a time-dependent scatterer"

We derive constraints on the statistics of the charge transfer between two conductors in the model of arbitrary time-dependent instant scattering of non-interacting fermions at zero temperature. The constraints are formulated in terms of analytic properties of the generating function: its zeroes must lie on the negative real axis. This result generalizes existing studies for scattering by a time-independent scatterer under time-dependent bias voltage.
Ref: A.G. Abanov and D.A. Ivanov, PRL 100, 086602 (2008) [arXiv:0709.2898].