A bifurcation sequence to stationary spatial patterns in a nonuniform chemical model system with equal diffusion coefficients

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Abstract
Numerical studies of the Gray–Scott model with equal diffusion coefficients show that a simple kinetic scheme can produce a transition sequence from a simple spatial state to stable stationary structures in an open spatial reactor with external gradients. The system displays multistability between periodic states, diffusion-induced aperiodic states and different steady patterns. The main upshot of the investigation is that external gradients greatly facilitate the self-organization of chemical structures.