Abstract
We examine energy and particle exchange between finite-sized quantum systems and find a new form of nonequilibrium state. The exchange rate undergoes stepwise evolution in time, and its magnitude and sign dramatically change according to system size differences. The origin lies in interference effects contributed by multiply scattered waves at system boundaries. Although such characteristics are utterly different from those of true steady state for infinite systems, Onsager's reciprocal relation remains universally valid.
- Received 16 February 2016
- Revised 19 July 2016
DOI:https://doi.org/10.1103/PhysRevE.94.022136
©2016 American Physical Society