Phys. Rev. E 75, 022102 (2007) [4 pages]Fluctuation theorems for a molecular refrigeratorReceived 12 January 2006; revised 26 September 2006; published 12 February 2007 We extend fluctuation theorems to a molecular refrigeration system that consists of Brownian particles in a heat bath under feedback control of their velocities. Such control can actively remove heat from the bath due to an entropy-pumping mechanism [ Phys. Rev. Lett. 93 120602 (2004)]. The presence of entropy pumping in an underdamped Brownian system modifies both the Jarzynski equality and the fluctuation theorems. We discover that the entropy pumping has a dual role of work and heat. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.75.022102
DOI:
10.1103/PhysRevE.75.022102
PACS:
05.70.Ln, 05.40.−a
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