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arXiv · 1203.2536

Dynamic effects induced by renormalization in anisotropic pattern forming systems

Adrian Keller·Matteo Nicoli·Stefan Facsko·Rodolfo Cuerno
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Abstract

The dynamics of patterns in large two-dimensional domains remains a challenge in non-equilibrium phenomena. Often it is addressed through mild extensions of one-dimensional equations. We show that full 2D generalizations of the latter can lead to unexpected dynamical behavior. As an example we consider the anisotropic Kuramoto-Sivashinsky equation, that is a generic model of anisotropic pattern forming systems and has been derived in different instances of thin film dynamics. A rotation of a ripple pattern by $90^{\circ}$ occurs in the system evolution when nonlinearities are strongly suppressed along one direction. This effect originates in non-linear parameter renormalization at different rates in the two system dimensions, showing a dynamical interplay between scale invariance and wavelength selection. Potential experimental realizations of this phenomenon are identified.

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Adrian Keller, Matteo Nicoli, Stefan Facsko, Rodolfo Cuerno. 2012-03-12. Dynamic effects induced by renormalization in anisotropic pattern forming systems. https://doi.org/10.1103/physreve.85.029905

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