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arXiv 1607.06043cond-mat.stat-mechphysics.bio-ph
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有效耗散:受驱动微观能量传输中时间反演对称性的破缺

Effective dissipation: breaking time-reversal symmetry in driven microscopic energy transmission

Aidan I. Brown, David A. Sivak

摘要:

在分子尺度上,波动起着重要的作用,并阻止生物分子过程总是在一个优选的方向上进行,提出了一个问题,即如何才能耗散有限的自由能以获得定向进展。我们研究的系统和过程的特点,有效地打破时间反演对称性在固定的能量损失,特别是对于一个简单的模型的分子机器,一个中间的能量障碍产生异常高的不对称性,对于给定的耗散。我们在这个模型中发现的破环因子与最近对生物分子机器的观察有关。

英文摘要:

At molecular scales, fluctuations play a significant role and prevent biomolecular processes from always proceeding in a preferred direction, raising the question of how limited amounts of free energy can be dissipated to obtain directed progress. We examine the system and process characteristics that efficiently break time-reversal symmetry at fixed energy loss; in particular for a simple model of a molecular machine, an intermediate energy barrier produces unusually high asymmetry for a given dissipation. We relate the symmetry-breaking factors found in this model to recent observations of biomolecular machines.

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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