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arXiv 2108.09345math.PRmath-phmath.MP
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具有加速边界条件的非对称简单排他过程(Hydrodynamic limit for asymmetric simple exclusion with accelerated boundaries)

Hydrodynamic limit for asymmetric simple exclusion with accelerated boundaries

Lu Xu

AI总结:

本文研究一维有限格点上ASEP在加速边界条件下的流体动力学极限,证明宏观密度剖面满足由边界熵刻画的Dirichlet型无粘Burgers方程,并提出分级方案控制微观边界层形成。

摘要:

我们研究一维有限格点{1,2,...,N}上的非对称简单排他过程(ASEP)。粒子可以以给定速率在边界处被产生/湮灭。这些速率是时间的L∞函数,且与体相中的跳跃速率无关。边界动力学被一个因子N^θ修改,其中θ>0。我们研究在双曲型时空尺度下粒子密度剖面的流体动力学极限。宏观方程由带有Dirichlet型边界条件的(无粘)Burgers方程给出,该边界条件由边界熵刻画。我们发展了一种分级方案来控制微观尺度上边界层的形成。

英文摘要:

We consider the asymmetric simple exclusion process (ASEP) on the one-dimensional finite lattice $\{1,2,\ldots,N\}$. The particles can be created/annihilated at the boundaries with given rates. These rates are $L^\infty$ functions of time and are independent of the jump rates in the bulk. The boundary dynamics is modified by a factor $N^θ$ with $θ>0$. We study the hydrodynamic limit for the particle density profile under the hyperbolic space-time scale. The macroscopic equation is given by (inviscid) Burgers equation with Dirichlet type boundaries that is characterized by the boundary entropy. A grading scheme is developed to control the formulation of boundary layers on the microscopic level.

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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