To access the full text documents, please follow this link: http://hdl.handle.net/2117/26337

Title:	Dynamics of reaction-diffusion patterns controlled by asymmetric nonlocal coupling as a limiting case of differential advection
Author:	Siebert, Julien; Alonso Muñoz, Sergio; Bär, Markus; Schöll, Eckehard
Other authors:	Universitat Politècnica de Catalunya. Departament de Física Aplicada
Abstract:	A one-component bistable reaction-diffusion system with asymmetric nonlocal coupling is derived as a limiting case of a two-component activator-inhibitor reaction-diffusion model with differential advection. The effects of asymmetric nonlocal couplings in such a bistable reaction-diffusion system are then compared to the previously studied case of a system with symmetric nonlocal coupling. We carry out a linear stability analysis of the spatially homogeneous steady states of the model and numerical simulations of the model to show how the asymmetric nonlocal coupling controls and alters the steady states and the front dynamics in the system. In a second step, a third fast reaction-diffusion equation is included which induces the formation of more complex patterns. A linear stability analysis predicts traveling waves for asymmetric nonlocal coupling, in contrast to a stationary Turing patterns for a system with symmetric nonlocal coupling. These findings are verified by direct numerical integration of the full equations with nonlocal coupling.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Física::Termodinàmica -Chaotic behavior in system -Nonlinear functional analysis -Caos (Teoria de sistemes) -Anàlisi funcional no lineal
Rights:	Attribution-NonCommercial-NoDerivs 3.0 Spain http://creativecommons.org/licenses/by-nc-nd/3.0/es/
Document type:	Article - Published version Article
Share:

Show full item record