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arXiv 1003.1289math.PRmath-phmath.MP
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高维交错渗流的临界参数

On the critical parameter of interlacement percolation in high dimension

Alain-Sol Sznitman

摘要:

${\mathbb{Z}}^d$上随机交错的空集合$d\ge3$具有非平凡的重复性质。从Sznitman [Ann.Math.171(2010)2039- 2087]、Sidoravicius和Sznitman [Comm. Pure Appl.Math.62(2009)831- 858]可知,存在非退化临界值$u_*$,使得当为$u<u_*$时,在水平$u$处的空集发生迁移,而当为$u>u_*$时,该空集不发生渗滤。当$d$趋于无穷大时,我们在这里推导出$u_*$的渐近上界,这补充了Sznitman [Probab.理论相关领域,出现]。我们的主要结果表明,$u_*$是等价于$\log d$大$d$,因此具有相同的主要渐近行为的临界参数附加到随机交错$2d$ -正规树,这已明确计算在Teixeira [电子。14(2009)1604- 1627]。

英文摘要:

The vacant set of random interlacements on ${\mathbb{Z}}^d$, $d\ge3$, has nontrivial percolative properties. It is known from Sznitman [Ann. Math. 171 (2010) 2039--2087], Sidoravicius and Sznitman [Comm. Pure Appl. Math. 62 (2009) 831--858] that there is a nondegenerate critical value $u_*$ such that the vacant set at level $u$ percolates when $u<u_*$ and does not percolate when $u>u_*$. We derive here an asymptotic upper bound on $u_*$, as $d$ goes to infinity, which complements the lower bound from Sznitman [Probab. Theory Related Fields, to appear]. Our main result shows that $u_*$ is equivalent to $\log d$ for large $d$ and thus has the same principal asymptotic behavior as the critical parameter attached to random interlacements on $2d$-regular trees, which has been explicitly computed in Teixeira [Electron. J. Probab. 14 (2009) 1604--1627].

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