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- W3208154167 abstract "Spiral waves emerge in numerous pattern forming systems and are commonly modeled with reaction-diffusion systems. Some systems used to model biological processes, such as ion-channel models, fall under the reaction-diffusion category and often have one or more non-diffusing species which results in a rank-deficient diffusion matrix. Previous theoretical research focused on spiral spectra for strictly positive diffusion matrices. In this paper, we use a general two-variable reaction-diffusion system to compare the essential and absolute spectra of spiral waves for strictly positive and rank-deficient diffusion matrices. We show that the essential spectrum is not continuous in the limit of vanishing diffusion in one component. Moreover, we predict locations for the absolute spectrum in the case of a non-diffusing slow variable. Predictions are confirmed numerically for the Barkley and Karma models." @default.
- W3208154167 created "2021-11-08" @default.
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- W3208154167 date "2022-06-01" @default.
- W3208154167 modified "2023-10-16" @default.
- W3208154167 title "Behavior of Spiral Wave Spectra with a Rank-Deficient Diffusion Matrix" @default.
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- W3208154167 doi "https://doi.org/10.1137/21m1455917" @default.
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