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arXiv 2404.01286cond-mat.stat-mech
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超越线性响应:热力学几何与最优输运的等价性

Beyond Linear Response: Equivalence between Thermodynamic Geometry and Optimal Transport

Adrianne Zhong, Michael R. DeWeese

AI总结:

本文证明过阻尼动力学中热力学几何与 L2 最优输运几何等价,并提出测地线加反非绝热项的最优协议构造方法,超越线性响应区域且计算可处理,成功解释双阱协议中的非单调行为与端点跳跃现象。

摘要:

热力学几何的一个基本结果是,在慢驱动极限下,驱动非平衡系统在两个热力学状态之间运行的最优、最小功协议由摩擦张量的测地线给出,该摩擦张量是定义在控制空间上的黎曼度量。对于任意维度中的过阻尼动力学,我们证明热力学几何等价于定义在与控制参数对应的平衡分布空间上的 $L^2$ 最优输运几何。我们表明,在慢驱动或线性响应区域之外获得最优协议在计算上是可处理的,其形式为摩擦张量测地线与一个与 Fisher 信息度量相关的反非绝热项之和。这些测地线-反非绝热最优协议对于参数化谐振子势是精确的,重现了最近在线性偏置双阱最优协议中发现的令人惊讶的非单调行为,并解释了在开始和结束时刻普遍观察到的不连续跳跃。

英文摘要:

A fundamental result of thermodynamic geometry is that the optimal, minimal-work protocol that drives a nonequilibrium system between two thermodynamic states in the slow-driving limit is given by a geodesic of the friction tensor, a Riemannian metric defined on control space. For overdamped dynamics in arbitrary dimensions, we demonstrate that thermodynamic geometry is equivalent to $L^2$ optimal transport geometry defined on the space of equilibrium distributions corresponding to the control parameters. We show that obtaining optimal protocols past the slow-driving or linear response regime is computationally tractable as the sum of a friction tensor geodesic and a counterdiabatic term related to the Fisher information metric. These geodesic-counterdiabatic optimal protocols are exact for parameteric harmonic potentials, reproduce the surprising non-monotonic behavior recently discovered in linearly-biased double well optimal protocols, and explain the ubiquitous discontinuous jumps observed at the beginning and end times.

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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