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arXiv 1202.0774cond-mat.stat-mech
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具有排斥的非对称流中电流活动波动的统计

Statistics of current activity fluctuations in asymmetric flow with exclusion

R. B. Stinchcombe, S. L. A. de Queiroz

摘要:

我们考虑一维完全不对称简单排斥过程(TASEP)的稳态电流活度统计。借助已知的算子代数(一般开边界条件),以及一般概率概念(周期性的情况下),我们推导和评估的概率分布函数的最低三个时刻的封闭形式的表达式。这些都证实了,良好的准确度,通过数值模拟。进一步的精确表达式和渐近近似的概率分布和生成函数。

英文摘要:

We consider steady-state current activity statistics for the one-dimensional totally asymmetric simple exclusion process (TASEP). With the help of the known operator algebra (for general open boundary conditions), as well as general probabilistic concepts (for the periodic case), we derive and evaluate closed-form expressions for the lowest three moments of the probability distribution function. These are confirmed, to excellent degree of accuracy, by numerical simulations. Further exact expressions and asymptotic approximations are provided for probability distributions and generating functions.

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