Fluctuation theorems for a molecular refrigerator

被引：68
|
作者：
Kim, Kyung Hyuk [1 ]
Qian, Hong
机构：
[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA
[2] Univ Washington, Dept Math Appl, Seattle, WA 98195 USA
来源：
PHYSICAL REVIEW E | 2007年 / 75卷 / 02期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevE.75.022102
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
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.
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页数：4
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