arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1811.01366math.PR
收藏

动态环境中的对称简单排它过程:流体力学

Symmetric simple exclusion process in dynamic environment: hydrodynamics

Frank Redig, Ellen Saada, Federico Sau

摘要:

考虑具有猝灭有界动态随机电导的$\mathbb Z^d$中的对称简单排它过程,证明了它在路径空间中的流体动力学极限。主要的工具是联系,由于过程的自对偶性,从所有点开始的单粒子的不变原理和密度场的宏观行为之间的联系。虽然在固定的宏观时间的流体动力学极限是通过一个推广的时间不均匀的背景下,在\cite{nagy_symmetric_2002}中引入的策略,为了证明紧的经验密度场序列,我们开发了一个新的标准的基础上的概念,一致的条件随机连续性,以下\cite{varadhan_stochasticprocesses_2007}。总之,我们表明,均匀椭圆动态电导提供了一个例子的环境中,所谓的任意起始点不变原理可能来自从原点开始的单个粒子的不变原理。因此,我们的流体力学结果适用于淬火环境的例子,例如,\cite{andres2014}、\cite{andres_quenched_2018}、\cite{biskup_invariance_2019}结合一致椭圆性假设。

英文摘要:

We consider the symmetric simple exclusion process in $\mathbb Z^d$ with quenched bounded dynamic random conductances and prove its hydrodynamic limit in path space. The main tool is the connection, due to the self-duality of the process, between the invariance principle for single particles starting from all points and the macroscopic behavior of the density field. While the hydrodynamic limit at fixed macroscopic times is obtained via a generalization to the time-inhomogeneous context of the strategy introduced in \cite{nagy_symmetric_2002}, in order to prove tightness for the sequence of empirical density fields we develop a new criterion based on the notion of uniform conditional stochastic continuity, following \cite{varadhan_stochasticprocesses_2007}. In conclusion, we show that uniform elliptic dynamic conductances provide an example of environments in which the so-called arbitrary starting point invariance principle may be derived from the invariance principle of a single particle starting from the origin. Therefore, our hydrodynamics result applies to the examples of quenched environments considered in, e.g.,\ \cite{andres2014}, \cite{andres_quenched_2018}, \cite{biskup_invariance_2019} in combination with the hypothesis of uniform ellipticity.

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。

↑