摘要翻译:
研究了完全非对称排斥过程的一个推广,它包含了一个动态扩展的格。虽然最初是作为丝状真菌生长的模型而受到启发的,但在这里,动态扩展排斥过程(DEEP)是作为非平衡排斥过程模型类别的一个重要补充而被研究的。在这里,我们讨论了各种平均场近似格式,并阐明了模型的稳态行为及其相关的相图。特别值得注意的是,扩展晶格的动力学在相图中导致了一个新的区域,在该区域中,密度中的激波间断以低于晶格尖端速度的速度向前移动。因此,在这个区域,冲击从两个边界退去。
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英文标题:
《A dynamically extending exclusion process》
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作者:
K. E. P. Sugden, M. R. Evans
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
An extension of the totally asymmetric exclusion process, which incorporates a dynamically extending lattice is explored. Although originally inspired as a model for filamentous fungal growth, here the dynamically extending exclusion process (DEEP) is studied in its own right, as a nontrivial addition to the class of nonequilibrium exclusion process models. Here we discuss various mean-field approximation schemes and elucidate the steady state behaviour of the model and its associated phase diagram. Of particular note is that the dynamics of the extending lattice leads to a new region in the phase diagram in which a shock discontinuity in the density travels forward with a velocity that is lower than the velocity of the tip of the lattice. Thus in this region the shock recedes from both boundaries.
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PDF链接:
https://arxiv.org/pdf/707.4504


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