论文标题
隐藏的能量在强耦合的非平衡系统中流动
Hidden energy flows in strongly coupled nonequilibrium systems
论文作者
论文摘要
量化内部和通过波动的纳米级系统的能量流对了解微观生物机器构成了重大挑战。一种常见的方法涉及粗粒，可以简化对此类系统的描述。这具有诱导所谓的隐藏贡献（由于子分辨率动力学）的副作用，使所得的热力学变得复杂。在这里，我们开发了一种热力学一致的理论，描述了自主系统内部内部的非平衡过量功率，并引入了一个现象学框架，以量化与其运行相关的隐藏过剩能力。我们在分子传输电机和旋转电动机的最小模型的数值模拟中证实了我们的理论预测。
Quantifying the flow of energy within and through fluctuating nanoscale systems poses a significant challenge to understanding microscopic biological machines. A common approach involves coarse-graining, which allows a simplified description of such systems. This has the side effect of inducing so-called hidden contributions (due to sub-resolution dynamics) that complicate the resulting thermodynamics. Here we develop a thermodynamically consistent theory describing the nonequilibrium excess power internal to autonomous systems, and introduce a phenomenological framework to quantify the hidden excess power associated with their operation. We confirm our theoretical predictions in numerical simulations of a minimal model for both a molecular transport motor and a rotary motor.
