Fluctuation-dissipation theorems and entropy production in relaxational systems
Fluctuation-dissipation theorems and entropy production in relaxational systems
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DOI：
10.1103/physrevlett.79.2168
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发表时间：
1997-09-22
影响因子：
8.6
通讯作者：
Kurchan, J
中科院分区：
文献类型：
--
作者：
Cugliandolo, LF;Dean, DS;Kurchan, J
我们表明，对于随机动力系统的平衡的波动耗散等式的违反是有界的熵产生的函数。这个结果适用于比“接近平衡”更广泛的情况，包括扩散以及玻璃和其他远离平衡的宏观系统。对于老化系统，这就限制了年龄-频率范围，在该范围内，磁化率满足H函数衰减率的涨落耗散定理，这是一个与系统接触的温度计的阅读密切相关的问题。
We show that for stochastic dynamical systems out of equilibrium the violation of the fluctuation dissipation equality is bounded by a function of the entropy production. The result applies to a much wider situation than ''near equilibrium,'' comprising diffusion as well as glasses and other macroscopic systems far from equilibrium. For aging systems this bounds the age-frequency regimes in which the susceptibilities satisfy the fluctuation-dissipation theorem in terms of the rate of decay of the H function, a question intimately related to the reading of a thermometer placed in contact with the system.