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Dynamics of domain walls in pattern formation under traveling-wave forcing
Rüdiger, S.; Casademunt i Viader, Jaume; Kramer, L.
Universitat de Barcelona
We study dynamics of domain walls in pattern forming systems that are externally forced by a moving space-periodic modulation close to 2:1 spatial resonance. The motion of the forcing induces nongradient dynamics, while the wave number mismatch breaks explicitly the chiral symmetry of the domain walls. The combination of both effects yields an imperfect nonequilibrium Ising-Bloch bifurcation, where all kinks (including the Ising-like one) drift. Kink velocities and interactions are studied within the generic amplitude equation. For nonzero mismatch, a transition to traveling bound kink-antikink pairs and chaotic wave trains occurs.
2010-06-12
Química física
Dinàmica de fluids
Chemistry, Physical and theoretical
Fluid dynamics
(c) American Physical Society, 2007
Article
American Physical Society
         

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