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arXiv 0705.0317cond-mat.stat-mech
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再论一维扩散接触过程

Revisiting the one-dimensional diffusive contact process

W. G. Dantas, M. J. de Oliveira, J. F. Stilck

摘要:

本文研究了一维带扩散的接触过程,采用了两种不同的方法来研究该模型的临界性质:超临界级数展开和有限尺寸精确解。特别强调,我们期待的多临界点和它的交叉指数的特点之间的DP和平均场临界性能的通道。这种交叉发生在无限扩散率的极限,我们的结果指出,$ϕ=4$作为更好的估计的交叉指数与计算模拟。

英文摘要:

In this work we study the one-dimensional contact process with diffusion using two different approaches to research the critical properties of this model: the supercritical series expansions and finite-size exact solutions. With special emphasis we look to the multicritical point and its crossover exponent that characterizes the passage between DP and mean-field critical properties. This crossover occurs in the limit of infinite diffusion rate and our results pointed $ϕ=4$ as the better estimate for the crossover exponent in agreement with computational simulations.

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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