4.6 Article

A proof by graphical construction of the no-pumping theorem of stochastic pumps

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/1742-5468/2011/10/P10006

Keywords

stochastic particle dynamics (theory)

Funding

  1. National Science Foundation (USA) [ECCS-0925365, DMR-0906601]
  2. University of Maryland, College Park
  3. Direct For Mathematical & Physical Scien
  4. Division Of Materials Research [906601] Funding Source: National Science Foundation
  5. Directorate For Engineering
  6. Div Of Electrical, Commun & Cyber Sys [0925365] Funding Source: National Science Foundation

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A stochastic pump is a Markov model of a mesoscopic system evolving under the control of externally varied parameters. In the model, the system makes random transitions among a network of states. For such models, a 'no-pumping theorem' has been obtained, which identifies minimal conditions for generating directed motion or currents. We provide a derivation of this result using a simple graphical construction on the network of states.

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