Reexamination of experimental tests of the fluctuation theorem
Reexamination of experimental tests of the fluctuation theorem
复制标题
涨落定理实验检验的复审
DOI：
10.1088/0305-4470/37/1/004
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
A. Dhar
中科院分区：
文献类型：
--
作者：
O. Narayan;A. Dhar
涨落定理和Jarzynski等式检查在最近的实验测试的光。对于通过溶剂拖动的颗粒，它表明，Q，与水库交换的热量，不服从Jarzynski等式，由于缓慢衰减的尾巴在其分布。对于分子拉伸实验，由于没有测量被移动的分子末端的力，可以对Jarzynski等式进行实质性的修正。我们还提出了一个证明朗之万动力学的波动定理，这是相当简单的标准证明。
The fluctuation theorem and the Jarzynski equality are examined in the light of recent experimental tests. For a particle dragged through a solvent, it is shown that Q, the heat exchanged with the reservoir, does not obey the Jarzynski equality due to slowly decaying tails in its distribution. For molecular stretching experiments, substantial corrections to the Jarzynski equality can result from not measuring the force at the end of the molecule that is moved. We also present a proof of the fluctuation theorem for Langevin dynamics that is considerably simpler than the standard proof.