Phase ordering in chaotic map lattices with conserved dynamics

Details Phase ordering in chaotic map lattices with conserved dynamics Phase ordering in chaotic map lattices with conserved dynamics

1999-07-09

arxiv.org/abs/cond-mat/9907149v2

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4 figures. Revised version accepted for publication on Physical Review E as a Rapid Communication

Scientific paper

10.1103/PhysRevE.60.R5021

Dynamical scaling in a two-dimensional lattice model of chaotic maps, in contact with a thermal bath, is numerically studied. The model here proposed is equivalent to a conserved Ising model with coupligs which fluctuate over the same time scale as spin moves. When couplings fluctuations and thermal fluctuations are both important, this model does not belong to the class of universality of a Langevin equation known as model B; the scaling exponents are continuously varying with the temperature and depend on the map used. The universal behavior of model B is recovered when thermal fluctuations are dominant.

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