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Fluctuations of the Occupation Density for a Parking Process

  • Cristian F. Coletti,
  • Sandro Gallo,
  • Alejandro Roldán-Correa,
  • León A. Valencia

摘要

Consider the following simple parking process on \(\Lambda _n:= \{-n, \ldots , n\}^d,d\ge 1\) Λ n : = { - n , , n } d , d 1 : at each step, a site i is chosen at random in \(\Lambda _n\) Λ n and if i and all its nearest neighbor sites are empty, i is occupied. Once occupied, a site remains so forever. The process continues until all sites in \(\Lambda _n\) Λ n are either occupied or have at least one of their nearest neighbors occupied. The final configuration (occupancy) of \(\Lambda _n\) Λ n is called the jamming limit and is denoted by \(X_{\Lambda _n}\) X Λ n . Ritchie (J Stat Phys 122:381–398, 2006) constructed a stationary random field on \(\mathbb {Z}^d\) Z d obtained as a (thermodynamic) limit of the \(X_{\Lambda _n}\) X Λ n ’s as n tends to infinity. As a consequence of his construction, he proved a strong law of large numbers for the proportion of occupied sites in the box \(\Lambda _n\) Λ n for the random field X. Here we prove the central limit theorem, the law of iterated logarithm, and a gaussian concentration inequality for the same statistics. A particular attention will be given to the case \(d=1\) d = 1 , in which we also obtain new asymptotic properties for the sequence \(X_{\Lambda _n},n\ge 1\) X Λ n , n 1 .