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arXiv 1502.00571cond-mat.stat-mech
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RC电路非平衡态间的涨落定理

Fluctuation theorem between non-equilibrium states in an RC circuit

Léo Granger, Jumna Mehlis, Édgar Roldán, Sergio Ciliberto, Holger Kantz

摘要:

涨落定理限制了在小系统中观察到负熵产生的概率,使其脱离平衡。涨落定理的有效范围已被广泛地检验为平衡定态与非平衡定态之间的跃迁,但未被检验为一般非平衡态之间的跃迁。本文报道了两个非平衡态之间的等温转变过程中产生的熵总量的详细涨落定理的实验验证。实验装置是由交流电流驱动的并联$RC$电路。我们调查的统计数据的热量释放,系统的熵的变化,以及不同持续时间的过程中产生的熵。我们表明,波动定理是满足高精度的电流驱动在不同的频率和不同的振幅。

英文摘要:

Fluctuation theorems impose constraints on the probability of observing negative entropy production in small systems driven out of equilibrium. The range of validity of fluctuation theorems has been extensively tested for transitions between equilibrium and non equilibrium stationary states, but not between general non equilibrium states. Here we report an experimental verification of the detailed fluctuation theorem for the total amount of entropy produced in the isothermal transition between two non-equilibrium states. The experimental setup is a parallel $RC$ circuit driven by an alternating current. We investigate the statistics of the heat released, of the variation of the entropy of the system, and of the entropy produced for processes of different durations. We show that the fluctuation theorem is satisfied with high accuracy for current drivings at different frequencies and different amplitudes.

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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