Excitability transitions and wave dynamics under spatiotemporal structured noise
We present an analytic and numerical study of the effects of external fluctuations in active media. Our analytical methodology transforms the initial stochastic partial differential equations into an effective set of deterministic reaction-diffusion equations. As a result we are able to explain and...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2002 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/18727 |
| Acceso en línea: | https://hdl.handle.net/2445/18727 |
| Access Level: | acceso abierto |
| Palabra clave: | Física estadística Termodinàmica Sistemes dinàmics diferenciables Química física Dinàmica de fluids Statistical physics Thermodynamics Differentiable dynamical systems Physical chemistry Fluid dynamics |
| Sumario: | We present an analytic and numerical study of the effects of external fluctuations in active media. Our analytical methodology transforms the initial stochastic partial differential equations into an effective set of deterministic reaction-diffusion equations. As a result we are able to explain and make quantitative predictions on the systematic and constructive effects of the noise, for example, target patterns created out of noise and traveling or spiral waves sustained by noise. Our study includes the case of realistic noises with temporal and spatial structures. |
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