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arXiv 0907.4914cond-mat.stat-mech
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非平衡反馈控制下的广义Jarzynski等式

Generalized Jarzynski Equality under Nonequilibrium Feedback Control

Takahiro Sagawa, Masahito Ueda

摘要:

Jarzynski等式被推广到非平衡系统受反馈控制的情况。由于反馈而产生的新术语描述了通过测量获得的互信息内容和反馈控制的功效。我们的研究结果导致一个广义的波动耗散定理,反映了读出信息,并可以使用小的热力学系统进行实验测试。我们通过引入一个“信息棘轮”来说明我们的一般结果,它可以在一个方向上传输布朗粒子,并从粒子中提取正功。

英文摘要:

The Jarzynski equality is generalized to situations in which nonequilibrium systems are subject to a feedback control. The new terms that arise as a consequence of the feedback describe the mutual information content obtained by measurement and the efficacy of the feedback control. Our results lead to a generalized fluctuation-dissipation theorem that reflects the readout information, and can be experimentally tested using small thermodynamic systems. We illustrate our general results by an introducing "information ratchet," which can transport a Brownian particle in one direction and extract a positive work from the particle.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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