title: Allowed charge transfers between coherent conductors driven by a time-dependent scatterer.
abstract: We derive constraints on the statistics of the charge transfer between two conductors in the model of arbitrary time-dependent instant scattering of noninteracting fermions at zero temperature. The constraints are formulated in terms of analytic properties of the generating function: its zeros must lie on the negative real axis. This result generalizes existing studies for scattering by a time-independent scatterer under time-dependent bias voltage.
authors: Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA.
authors: A G
authors: AG
authors: Abanov
authors: D A
authors: DA
authors: Ivanov