Relation between coupled map lattices and kinetic Ising models

Details Relation between coupled map lattices and kinetic Ising models Relation between coupled map lattices and kinetic Ising models

2000-02-21

arxiv.org/abs/nlin/0002035v1

Nonlinear Sciences

Chaotic Dynamics

15 pages, figures included, Phys. Rev. E in press

Scientific paper

A spatially one dimensional coupled map lattice possessing the same symmetries as the Miller Huse model is introduced. Our model is studied analytically by means of a formal perturbation expansion which uses weak coupling and the vicinity to a symmetry breaking bifurcation point. In parameter space four phases with different ergodic behaviour are observed. Although the coupling in the map lattice is diffusive, antiferromagnetic ordering is predominant. Via coarse graining the deterministic model is mapped to a master equation which establishes an equivalence between our system and a kinetic Ising model. Such an approach sheds some light on the dependence of the transient behaviour on the system size and the nature of the phase transitions.

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