Details

Autor(en) / Beteiligte

• Le Berre, M
• Ressayre, E
• Tallet, A
• Pomeau, Y
• Di Menza, L

Titel

Example of a chaotic crystal: the labyrinth

Ist Teil von

• Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 2002-08, Vol.66 (2 Pt 2), p.026203-026203, Article 026203

Ort / Verlag

United States

Erscheinungsjahr

2002

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• Labyrinthine structures often appear as the final steady state of pattern forming systems. Being disordered, they exhibit the same kind of short range positional order as the Newell-Pomeau turbulent crystal. Labyrinths can be seen as a limit case of the texture of disordered rolls with a coherence length of the same order as the wavelength. In the various two-dimensional model equations we looked at, labyrinths and parallel rolls are steady states for the same parameters, their occurrence depending on the initial conditions. Comparing the stability of these two structures, we find that in variational models their energy is very close, rolls always being more stable than labyrinths. For the nonvariational model we propose a numerical experiment which displays a well defined bifurcation from parallel rolls to labyrinths as the more stable state.