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Dynamical transitions of Turing patterns

Hans G Kaper1,3, Shouhong Wang2 and Masoud Yari2

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Recommended by J A Glazier

This paper is concerned with the formation and persistence of spatiotemporal patterns in binary mixtures of chemically reacting species, where one of the species is an activator, the other an inhibitor of the chemical reaction. The system of reaction–diffusion equations is reduced to a finite system of ordinary differential equations by a variant of the centre-manifold reduction method. The reduced system fully describes the local dynamics of the original system near transition points at the onset of instability. The attractor–bifurcation theory is used to give a complete characterization of the bifurcated objects in terms of the physical parameters of the problem. The results are illustrated for the Schnakenberg model.


PACS

82.40.Np Temporal and spatial patterns in surface reactions

05.60.-k Transport processes

82.40.Bj Oscillations, chaos, and bifurcations

82.20.-w Chemical kinetics and dynamics

05.45.-a Nonlinear dynamics and nonlinear dynamical systems

82.40.Ck Pattern formation in reactions with diffusion, flow and heat transfer

MSC

35K57 Reaction-diffusion equations

37G35 Attractors and their bifurcations

70K50 Bifurcations and instability

Subjects

Statistical physics and nonlinear systems

Chemical physics and physical chemistry

Dates

Issue 3 (March 2009)

Received 19 November 2008, in final form 19 January 2009

Published 10 February 2009



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