arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1012.4711math.PR
收藏

随机游动的随机交错与交的连通性

Connectivity properties of random interlacement and intersection of random walks

Balázs Ráth, Artëm Sapozhnikov

摘要:

本文研究了双无限Z^d-值轨线模时移空间上的交错Poisson点过程,它在正负无限时刻趋于无穷大.这些轨迹中的至少一个所访问的顶点和边的集合是在Sznitman arXiv:0704.2560的级别u处的随机交错。我们证明了对于任意u>0,几乎必然地,(1)在层u的随机交错中的任意两个顶点最多通过点过程的ceiling(d/2)条轨迹相连,(2)在层u的随机交错中存在顶点只能通过点过程的ceiling(d/2)条轨迹相连.特别地,这意味着Sznitman arXiv:0704.2560的已知结果,即在级别u处的随机交织是连接的。

英文摘要:

We consider the interlacement Poisson point process on the space of doubly-infinite Z^d-valued trajectories modulo time-shift, tending to infinity at positive and negative infinite times. The set of vertices and edges visited by at least one of these trajectories is the random interlacement at level u of Sznitman arXiv:0704.2560 . We prove that for any u>0, almost surely, (1) any two vertices in the random interlacement at level u are connected via at most ceiling(d/2) trajectories of the point process, and (2) there are vertices in the random interlacement at level u which can only be connected via at least ceiling(d/2) trajectories of the point process. In particular, this implies the already known result of Sznitman arXiv:0704.2560 that the random interlacement at level u is connected.

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。

↑