Phase Transitions in Brownian Pumps

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Author list: Dierl M, Dieterich W, Einax M, Maass P

Publisher: AMER PHYSICAL SOC

Place: COLLEGE PK

Publication year: 2014

Journal acronym: PHYS REV LETT

Volume number: 112

Issue number: 15

Number of pages: 4

ISSN: 0031-9007

eISSN: 1079-7114

Languages: English-Great Britain (EN-GB)

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Abstract

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.

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