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A consistent correlation approach to single file diffusion with reaction

机译:具有反应的单文件扩散的一致相关方法

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摘要

A method to efficiently simulate diffusion and reaction in a single-file system is presented. By considering all possible configuration of M species in a length N one-dimensional pore, a deterministic model consisting of (M + 1)~N variables can be constructed for the system. The order of the system can then be significantly reduced by considering only pairs of adjacent cells, or (M + 1)~2(N - 1) doublets. This lumped model is able to capture the most important correlations between cells when the dominant mode of transport is through single-site hops. Extensions of this method for higher dimensional pores and more complex molecular interactions are discussed. The results of the approximation are compared to results of the full deterministic model, and new situations are investigated. The implications of single-file behavior are discussed for reversible reactions and molecules of different mobilities.
机译:提出了一种有效模拟单文件系统中扩散和反应的方法。通过考虑长度为N的一维孔隙中M种的所有可能构型,可以为系统构建一个由(M +1)〜N个变量组成的确定性模型。通过仅考虑成对的相邻单元或(M +1)〜2(N-1)双重峰,可以显着降低系统的阶数。当主要的传输方式是通过单站点跃点时,这种集总模型能够捕获单元之间最重要的相关性。讨论了此方法对更高尺寸的孔和更复杂的分子相互作用的扩展。将近似结果与完整确定性模型的结果进行比较,并研究新情况。讨论了单一文件行为对可逆反应和不同迁移率分子的影响。

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