Comment on ``Phase ordering in chaotic map lattices with conserved dynamics''

Abstract

Angelini, Pellicoro, and Stramaglia [Phys. Rev. E {\bf 60}, R5021 (1999), cond-mat/9907149] (APS) claim that the phase ordering of two-dimensional systems of sequentially-updated chaotic maps with conserved ``order parameter'' does not belong, for large regions of parameter space, to the expected universality class. We show here that these results are due to a slow crossover and that a careful treatment of the data yields normal dynamical scaling. Moreover, we construct better models, i.e. synchronously-updated coupled map lattices, which are exempt from these crossover effects, and allow for the first precise estimates of persistence exponents in this case.

3 pages, to be published in Phys. Rev. E

References in corpus (4)

• Persistence in Nonequilibrium Systems
• Phase Ordering and Onset of Collective Behavior in Chaotic Coupled Map Lattices
• Anisotropic Coarsening: Grain Shapes and Nonuniversal Persistence
• Phase ordering in chaotic map lattices with conserved dynamics

Cited by in corpus (4)

• Late stages of coarsening in model C
• Comment on ``Deterministic equations of motion and phase ordering dynamics''
• Phase Ordering in Chaotic Map Lattices with Additive Noise
• Antiferromagnetic effects in Chaotic Map lattices with a conservation law