Phase ordering induced by defects in chaotic bistable media

Physics – Condensed Matter – Disordered Systems and Neural Networks

Scientific paper

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Additional info

3 pages, 3 figures, Accepted in European Physics Journal

Type

Scientific paper

Digital Object Identifier

10.1140/epjst/e2007-00096-8

Abstract

The phase ordering dynamics of coupled chaotic bistable maps on lattices with defects is investigated. The statistical properties of the system are characterized by means of the average normalized size of spatial domains of equivalent spin variables that define the phases. It is found that spatial defects can induce the formation of domains in bistable spatiotemporal systems. The minimum distance between defects acts as parameter for a transition from a homogeneous state to a heterogeneous regime where two phases coexist The critical exponent of this transition also exhibits a transition when the coupling is increased, indicating the presence of a new class of domain where both phases coexist forming a chessboard pattern.

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