A previously overlooked version of the so-called Olsen model of the peroxidase–oxidase reaction has been studied numerically using 2D isospike stability and maximum Lyapunov exponent diagrams and reveals a rich variety of dynamic behaviors not observed before. The model has a complex bifurcation structure involving mixed-mode and bursting oscillations as well as quasiperiodic and chaotic dynamics. In addition, multiple periodic and non-periodic attractors coexist for the same parameters. For some parameter values, the model also reveals formation of mosaic patterns of complex dynamic states. The complex dynamic behaviors exhibited by this model are compared to those of another version of the same model, which has been studied in more detail. The two models show similarities, but also notable differences between them, e.g., the organization of mixed-mode oscillations in parameter space and the relative abundance of quasiperiodic and chaotic oscillations. In both models, domains with chaotic dynamics contain apparently disorganized subdomains of periodic attractors with dinoflagellate-like structures, while the domains with mainly quasiperiodic behavior contain subdomains with periodic attractors organized as regular filamentous structures. These periodic attractors seem to be organized according to Stern–Brocot arithmetics. Finally, it appears that toroidal (quasiperiodic) attractors develop into first wrinkled and then fractal tori before they break down to chaotic attractors.
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February 2023
Research Article|
February 02 2023
Complex dynamics in an unexplored simple model of the peroxidase–oxidase reaction Available to Purchase
Lars Folke Olsen
Lars Folke Olsen
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Writing – original draft, Writing – review & editing)
PhyLife, Institute of Biochemistry and Molecular Biology, University of Southern Denmark
, Campusvej 55, DK-5230 Odense M, Denmark
a)Author to whom correspondence should be addressed: [email protected]
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Lars Folke Olsen
a)
PhyLife, Institute of Biochemistry and Molecular Biology, University of Southern Denmark
, Campusvej 55, DK-5230 Odense M, Denmark
a)Author to whom correspondence should be addressed: [email protected]
Chaos 33, 023102 (2023)
Article history
Received:
October 03 2022
Accepted:
January 09 2023
Citation
Lars Folke Olsen; Complex dynamics in an unexplored simple model of the peroxidase–oxidase reaction. Chaos 1 February 2023; 33 (2): 023102. https://doi.org/10.1063/5.0129095
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