Non-adiabatic pumping in an oscillating-piston model

Maya Chuchem, Thomas Dittrich, Doron Cohen

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

We consider the prototypical "piston pump" operating on a ring, where a circulating current is induced by means of an AC driving. This can be regarded as a generalized Fermi-Ulam model, incorporating a finite-height moving wall (piston) and non-trivial topology (ring). The amount of particles transported per cycle is determined by a layered structure of phase space. Each layer is characterized by a different drift velocity. We discuss the differences compared with the adiabatic and Boltzmann pictures, and highlight the significance of the "diabatic" contribution that might lead to a counter-stirring effect.

Original languageEnglish
Article number38001
JournalEurophysics Letters
Volume98
Issue number3
DOIs
StatePublished - 1 May 2012

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