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arXiv 1509.06010cond-mat.stat-mech
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多粒子系统中的随机热力学

Stochastic thermodynamics in many-particle systems

Alberto Imparato

摘要:

我们研究了一个耦合振子微观模型的热力学性质,该模型表现出从非同步到同步的动态相变。我们考虑两种不同的配置的热力学力施加在振荡器上,一个类似的宏观电网,和一个类似的自主分子马达。我们的特征的输入和输出功率,以及在最大功率的效率,这些数量附近的临界耦合强度提供解析表达式。我们讨论的淬火无序的热力学力分布的作用,并表明,这样的无序可能会导致在最大功率的效率的提高。

英文摘要:

We study the thermodynamic properties of a microscopic model of coupled oscillators that exhibits a dynamical phase transition from a desynchronized to a synchronized phase. We consider two different configurations for the thermodynamic forces applied on the oscillators, one resembling the macroscopic power grids, and one resembling autonomous molecular motors. We characterize the input and the output power as well as the efficiency at maximum power, providing analytic expressions for such quantities near the critical coupling strength. We discuss the role of the quenched disorder in the thermodynamic force distributions and show that such a disorder may lead to an enhancement of the efficiency at maximum power.

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