English

Fluctuations in the composite regime of a disordered growth model

Probability 2007-05-23 v2 Mathematical Physics math.MP

Abstract

We continue to study a model of disordered interface growth in two dimensions. The interface is given by a height function on the sites of the one--dimensional integer lattice and grows in discrete time: (1) the height above the site xx adopts the height above the site to its left if the latter height is larger, (2) otherwise, the height above xx increases by 1 with probability pxp_x. We assume that pxp_x are chosen independently at random with a common distribution FF, and that the initial state is such that the origin is far above the other sites. Provided that the tails of the distribution FF at its right edge are sufficiently thin, there exists a nontrivial composite regime in which the fluctuations of this interface are governed by extremal statistics of pxp_x. In the quenched case, the said fluctuations are asymptotically normal, while in the annealed case they satisfy the appropriate extremal limit law.

Keywords

Cite

@article{arxiv.math/0111036,
  title  = {Fluctuations in the composite regime of a disordered growth model},
  author = {Janko Gravner and Craig A. Tracy and Harold Widom},
  journal= {arXiv preprint arXiv:math/0111036},
  year   = {2007}
}

Comments

33 pages, 2 figures