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arXiv 1602.01459cond-mat.stat-mech
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复杂非平衡变换中的近优协议

Near-optimal protocols in complex nonequilibrium transformations

Todd R. Gingrich, Grant M. Rotskoff, Gavin E. Crooks, Phillip L. Geissler

摘要:

先进的实验手段来控制纳米系统的发展,促使人们努力设计驱动协议,最大限度地减少能量耗散到环境中。计算模型是应对这一实际挑战的关键工具。我们描述了一个一般的方法采样合奏的有限时间,非平衡协议偏向于一个低的平均耗散。我们表明,该计划可以进行非常有效地在几个限制的情况下。作为一个应用程序,我们采样的合奏低耗散协议,反转磁化的2D伊辛模型,并探讨协议的多样性如何变化的平均耗散的约束。在这个例子中,我们发现有一个大的协议集的平均耗散接近最优值,我们认为这是一个普遍的现象。

英文摘要:

The development of sophisticated experimental means to control nanoscale systems has motivated efforts to design driving protocols which minimize the energy dissipated to the environment. Computational models are a crucial tool in this practical challenge. We describe a general method for sampling an ensemble of finite-time, nonequilibrium protocols biased towards a low average dissipation. We show that this scheme can be carried out very efficiently in several limiting cases. As an application, we sample the ensemble of low-dissipation protocols that invert the magnetization of a 2D Ising model and explore how the diversity of the protocols varies in response to constraints on the average dissipation. In this example, we find that there is a large set of protocols with average dissipation close to the optimal value, which we argue is a general phenomenon.

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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