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arXiv · 1201.0004

Non-adiabatic pumping in an oscillating-piston model

Maya Chuchem·Thomas Dittrich·Doron Cohen
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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.

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Maya Chuchem, Thomas Dittrich, Doron Cohen. 2012-04-02. Non-adiabatic pumping in an oscillating-piston model. https://doi.org/10.1209/0295-5075%2F98%2F38001

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