Exact formula for currents in strongly pumped diffusive systems
arXiv:0909.0424 · doi:10.1007/s10955-009-9818-x
Abstract
We analyze a generic model of mesoscopic machines driven by the nonadiabatic variation of external parameters. We derive a formula for the probability current; as a consequence we obtain a no-pumping theorem for cyclic processes satisfying detailed balance and demonstrate that the rectification of current requires broken spatial symmetry.
10 pages, accepted for publication in the Journal of Statistical Physics