Issue |
Math. Model. Nat. Phenom.
Volume 8, Number 5, 2013
Bifurcations
|
|
---|---|---|
Page(s) | 131 - 154 | |
DOI | https://doi.org/10.1051/mmnp/20138509 | |
Published online | 17 September 2013 |
Instabilities and Dynamics of Weakly Subcritical Patterns
Department of Physics, University of California,
Berkeley
CA
94720,
USA
⋆ Corresponding author. E-mail: hckao@berkeley.edu
The bifurcation to one-dimensional weakly subcritical periodic patterns is described by the cubic-quintic Ginzburg-Landau equation
At = µA + Axx + i(a1|A|2Ax + a2A2Ax*) + b|A|2A - |A|4A.
These periodic patterns may in turn become unstable through one of two different mechanisms, an Eckhaus instability or an oscillatory instability. We study the dynamics near the instability threshold in each of these cases using the corresponding modulation equations and compare the results with those obtained from direct numerical simulation of the equation. We also study the stability properties and dynamical evolution of different types of fronts present in the protosnaking region of this equation. The results provide new predictions for the dynamical properties of generic systems in the weakly subcritical regime.
Mathematics Subject Classification: 34E13 / 37G40 / 37M05
Key words: bifurcation / cubic-quintic Ginzburg-Landau equation / weakly subcritical periodic pattern
© EDP Sciences, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.