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First passage percolation has sublinear distance variance (2003)

Abstract
Let $0 < a < b < \infty$, and for each edge e of $\Z^d$ let $\omega_e=a$ or $\omega_e=b$, each with probability $1/2$, independently. This induces a random metric $\dist_\omega$ on the vertices of $\Z^d$, called first passage percolation. We prove that for $d>1$, the distance $\dist_\omega(0,v)$ from the origin to a vertex $v$, $|v|>2$, has variance bounded by $C|v|/\log|v|$, where $C=C(a,b,d)$ is a constant which may only depend on a, b and d. Some related variants are also discussed.

Publication details
Download http://ProjectEuclid.org/getRecord?id=euclid.aop/1068646373
Publisher The Institute of Mathematical Statistics
Repository Project Euclid (Hosted at Cornell University Library) (United States)
Keywords 60K35 (MSC2000), 60B15 (MSC2000), 28A35 (MSC2000), 60E15 (MSC2000), Hypercontractive, harmonic analysis, discrete harmonic analysis, discrete cube, random metrics, discrete isoperimetric inequalities, influences
Type text
Language Englisch

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