Non-linear effects on Turing patterns: time oscillations and chaos.
We show that a model reaction-diffusion system with two species in a monostable regime and over a large region of parameter space, produces Turing patterns coexisting with a limit cycle which cannot be discerned from the linear analysis. As a consequence, Turing patterns oscillate in time, a phenome...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Published: |
2012
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| _version_ | 1826293675098898432 |
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| author | Aragón, J Barrio, R Woolley, T Baker, R Maini, P |
| author_facet | Aragón, J Barrio, R Woolley, T Baker, R Maini, P |
| author_sort | Aragón, J |
| collection | OXFORD |
| description | We show that a model reaction-diffusion system with two species in a monostable regime and over a large region of parameter space, produces Turing patterns coexisting with a limit cycle which cannot be discerned from the linear analysis. As a consequence, Turing patterns oscillate in time, a phenomenon which is expected to occur only in a three morphogen system. When varying a single parameter, a series of bifurcations lead to period doubling, quasi-periodic and chaotic oscillations without modifying the underlying Turing pattern. A Ruelle-Takens-Newhouse route to chaos is identified. We also examined the Turing conditions for obtaining a diffusion driven instability and discovered that the patterns obtained are not necessarily stationary for certain values of the diffusion coefficients. All this results demonstrates the limitations of the linear analysis for reaction-diffusion systems. |
| first_indexed | 2024-03-07T03:33:48Z |
| format | Journal article |
| id | oxford-uuid:bb9d9de5-25a1-4071-891a-467f10e59d1a |
| institution | University of Oxford |
| last_indexed | 2024-03-07T03:33:48Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:bb9d9de5-25a1-4071-891a-467f10e59d1a2022-03-27T05:18:14ZNon-linear effects on Turing patterns: time oscillations and chaos.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:bb9d9de5-25a1-4071-891a-467f10e59d1aMathematical Institute - ePrints2012Aragón, JBarrio, RWoolley, TBaker, RMaini, PWe show that a model reaction-diffusion system with two species in a monostable regime and over a large region of parameter space, produces Turing patterns coexisting with a limit cycle which cannot be discerned from the linear analysis. As a consequence, Turing patterns oscillate in time, a phenomenon which is expected to occur only in a three morphogen system. When varying a single parameter, a series of bifurcations lead to period doubling, quasi-periodic and chaotic oscillations without modifying the underlying Turing pattern. A Ruelle-Takens-Newhouse route to chaos is identified. We also examined the Turing conditions for obtaining a diffusion driven instability and discovered that the patterns obtained are not necessarily stationary for certain values of the diffusion coefficients. All this results demonstrates the limitations of the linear analysis for reaction-diffusion systems. |
| spellingShingle | Aragón, J Barrio, R Woolley, T Baker, R Maini, P Non-linear effects on Turing patterns: time oscillations and chaos. |
| title | Non-linear effects on Turing patterns: time oscillations and chaos. |
| title_full | Non-linear effects on Turing patterns: time oscillations and chaos. |
| title_fullStr | Non-linear effects on Turing patterns: time oscillations and chaos. |
| title_full_unstemmed | Non-linear effects on Turing patterns: time oscillations and chaos. |
| title_short | Non-linear effects on Turing patterns: time oscillations and chaos. |
| title_sort | non linear effects on turing patterns time oscillations and chaos |
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