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Bloch-front turbulence: theory and experiments

Author

Listed:
  • Hagberg, Aric
  • Marts, Bradley
  • Lin, Anna L.
  • Meron, Ehud

Abstract

We report on experimental and theoretical findings of front destabilization that causes spontaneous spiral–vortex nucleation and produces a state of spatio-temporal disorder. The experiments were carried out on an oscillatory photosensitive Belousov–Zhabotinsky reaction that is periodically forced in time. Numerical studies were carried out on a modified Complex Ginzburg–Landau equation and on the FitzHugh–Nagumo model. Using velocity–curvature relations for fronts we associate the onset of spatio-temporal disorder with the Nonequilibrium Ising Bloch (NIB) bifurcation, and study the generic patterns that form on both sides of the bifurcation as the distance from it is increased.

Suggested Citation

  • Hagberg, Aric & Marts, Bradley & Lin, Anna L. & Meron, Ehud, 2005. "Bloch-front turbulence: theory and experiments," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 356(1), pages 88-94.
    • Handle: RePEc:eee:phsmap:v:356:y:2005:i:1:p:88-94
    DOI: 10.1016/j.physa.2005.05.018
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    References listed on IDEAS

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    1. Hagberg, Aric & Meron, Ehud, 1998. "Kinematic equations for front motion and spiral-wave nucleation," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 249(1), pages 118-124.
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