Localized Spot Patterns on the Sphere for Reaction-Diffusion Systems: Theory and Open Problems

Alastair Jamieson-Lane (), Philippe H. Trinh () and Michael J. Ward ()
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Alastair Jamieson-Lane: University of British Columbia, Department of Mathematics
Philippe H. Trinh: University of Oxford, OCIAM, Mathematical Institute
Michael J. Ward: University of British Columbia, Department of Mathematics

A chapter in Mathematical and Computational Approaches in Advancing Modern Science and Engineering, 2016, pp 641-651 from Springer

Abstract: Abstract A new class of point-interaction problem characterizing the time evolution of spatially localized spots for reaction-diffusion Reaction-diffusion (RD) systems on the surface of the sphere is introduced and studied. This problem consists of a differential algebraic system Differential algebraic system (DAE) of ODEs for the locations of a collection of spots on the sphere, and is derived from an asymptotic analysis in the large diffusivity ratio limit of certain singularly perturbed Singularly perturbed two-component RD systems. In Trinh and Ward (The dynamics of localized spot patterns for reaction-diffusion systems on the sphere. Nonlinearity Nonlinearity 29 (3), 766–806 (2016)), this DAE system was derived for the Brusselator Brusselator and Schnakenberg Schnakenberg RD systems, and herein we extend this previous analysis to the Gray-Scott Gray-Scott RD model. Results and open problems pertaining to the determination of equilibria of this DAE system, and its relation to elliptic Fekete point sets Fekete point sets , are highlighted. The potential of deriving similar DAE systems for more complicated modeling scenarios is discussed.

Keywords: Point Vortex; Slow Dynamic; Large Basin; Spot Pattern; Localize Spot (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-30379-6_58

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DOI: 10.1007/978-3-319-30379-6_58

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