Bistability, wave pinning and localisation in natural reaction–diffusion systems

AR Champneys, F Al Saadi, VF Breña–Medina… - Physica D: Nonlinear …, 2021 - Elsevier
A synthesis is presented of recent work by the authors and others on the formation of
localised patterns, isolated spots, or sharp fronts in models of natural processes governed …

Numerical Results for Snaking of Patterns over Patterns in Some 2D Selkov--Schnakenberg Reaction-Diffusion Systems

H Uecker, D Wetzel - SIAM Journal on Applied Dynamical Systems, 2014 - SIAM
For a Selkov--Schnakenberg model as a prototype reaction-diffusion system on two
dimensional domains, we use the continuation and bifurcation software\tt pde2path to …

Approximate localised dihedral patterns near a Turing instability

DJ Hill, JJ Bramburger, DJB Lloyd - Nonlinearity, 2023 - iopscience.iop.org
Fully localised patterns involving cellular hexagons or squares have been found
experimentally and numerically in various continuum models. However, there is currently no …

Stationary non-radial localized patterns in the planar Swift-Hohenberg PDE: constructive proofs of existence

M Cadiot, JP Lessard, JC Nave - Journal of Differential Equations, 2025 - Elsevier
In this paper, we present a methodology for establishing constructive proofs of existence of
smooth, stationary, non-radial localized patterns in the planar Swift-Hohenberg equation …

Dihedral rings of patterns emerging from a Turing bifurcation

DJ Hill, JJ Bramburger, DJB Lloyd - Nonlinearity, 2024 - iopscience.iop.org
Collective organisation of patterns into ring-like configurations has been well-studied when
patterns are subject to either weak or semi-strong interactions. However, little is known …

On periodically modulated rolls in the generalized Swift–Hohenberg equation: Galerkin'approximations

NE Kulagin, LM Lerman - Physica D: Nonlinear Phenomena, 2023 - Elsevier
We study in this paper the existence of periodically modulated in one variable and localized
in another variable solutions to the cubic Swift–Hohenberg equation on the plane R 2. In the …

Geometric blow-up of a dynamic Turing instability in the Swift-Hohenberg equation

F Hummel, S Jelbart, C Kuehn - arXiv preprint arXiv:2207.03967, 2022 - arxiv.org
We present a rigorous analysis of the slow passage through a Turing bifurcation in the Swift-
Hohenberg equation using a novel approach based on geometric blow-up. We show that …

Exponential asymptotics of homoclinic snaking

AD Dean, PC Matthews, SM Cox, JR King - Nonlinearity, 2011 - iopscience.iop.org
We study homoclinic snaking in the cubic-quintic Swift–Hohenberg equation (SHE) close to
the onset of a subcritical pattern-forming instability. Application of the usual multiple-scales …

Rigorous computation of a radially symmetric localized solution in a Ginzburg--Landau problem

JB van den Berg, CM Groothedde, JF Williams - SIAM Journal on Applied …, 2015 - SIAM
We present a rigorous numerical method for proving the existence of a localized radially
symmetric solution for a Ginzburg--Landau-type equation. This has a direct application to the …

Dissecting the snake: transition from localized patterns to spike solutions

N Verschueren, AR Champneys - Physica D: Nonlinear Phenomena, 2021 - Elsevier
An investigation is undertaken of coupled reaction–diffusion systems in one spatial
dimension that are able to support, in different regions of their parameter space, either an …