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arXiv 1611.04089cond-mat.stat-mech
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不利用信息从非平衡涨落中提取能量

Extracting energy from non-equilibrium fluctuations without using information

Shou-Wen Wang, Lei-Han Tang

摘要:

从波动中提取能量是一项永恒的努力。一个重要的战略是使用基于信息的操作,这使得即使从热波动中提取能量。然而,目前尚不清楚,对这种波动一无所知的盲目外部操作是否也会奏效。假设这样一个小的操作,我们发现能量提取需要在某个频率范围内的负响应谱,这不可避免地需要内部电源来维持。然后通过在这些频率下操作系统来提取能量。负响应是任何适应缓慢外部操作的系统所固有的,这可以通过积分反馈控制来实现。这些都是通过一个可解的模型证明。

英文摘要:

Extracting energy from fluctuations has been an everlasting endeavor. An important strategy is to use information-based operation, which allows energy extraction even from thermal fluctuations. However, it remains unclear whether a blind external operation, ignorant of such fluctuations, will also work. Assuming such a small operation, we find that energy extraction requires a negative response spectrum in a certain frequency region, which inevitably requires an internal power source to maintain. Energy is then extracted by operating the system at these frequencies. Negative response is intrinsic to any system that adapts to a slow external operation, which could be realized through integral feedback control. These are demonstrated through a solvable model.

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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