Phase transitions in Brownian pumps.
We study stochastic particle transport between two reservoirs along a channel, where the particles are pumped against a bias by a traveling wave potential. It is shown that phase transitions of period-averaged densities or currents occur inside the channel when exclusion interactions between the particles are taken into account. These transitions reflect those known for the asymmetric simple exclusion process. We argue that their occurrence is a generic feature of Brownian motors operating in open systems.
Fachbereich Physik, Universität Osnabrück, Barbarastraße 7, 49076 Osnabrück, Germany.
Marcel
M
Dierl
Fachbereich Physik, Universität Konstanz, 78457 Konstanz, Germany.
Wolfgang
W
Dieterich
Fachbereich Physik, Universität Osnabrück, Barbarastraße 7, 49076 Osnabrück, Germany and School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel.
Mario
M
Einax
Fachbereich Physik, Universität Osnabrück, Barbarastraße 7, 49076 Osnabrück, Germany.
Philipp
P
Maass