  Using memory-function formalism we show that in sheared colloidal suspensions
the fluctuation-dissipation theorem for self-diffusion, i.e. Einstein's
relation between self-diffusion and mobility tensors, is violated and propose a
new way to measure this violation in Brownian Dynamics simulations. We derive
mode-coupling expressions for the tagged particle friction tensor and for an
effective, shear-rate dependent temperature.
