Spatio-Temporal Patterns in Colonies of Rod-Shaped Bacteria(Oscillation, Chaos and Network Dynamics in Nonlinear Science)

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概要

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• In incubation experiments of bacterial colonies of Proteus Mirabilis, macroscopic spatiotemporal patterns, such as turbulent and unidirectional spiral patterns, appear in colonies. Considering only kinetic propeties of rod-shaped bacteria, we propose a phenomenological model for the directional and positional distributions. As the average density increases, homogeneous states bifurcate sub-critically into nonuniform states exhibiting localized collective motion, and spiral patterns appear for sufficiently large density. These patterns result from interactions between the local bacteria densities and the order parameter representing collective motion. Our model can be described by reduced equations using a perturbative method for large density. The unidirectionality of sprial rotation is also discussed.

• 理論物理学刊行会の論文
• 2006-04-20

著者

• Kitsunezaki So

  Department Of Physics Graduate School Of Human Culture Nara Women's University

• KITSUNEZAKI So

  Department of Physics, Graduate School of Human Culture, Nara Women's University

関連論文

• Dynamic Scaling of the Growing Rough Surfaces(General)
• Spatio-Temporal Patterns in Colonies of Rod-Shaped Bacteria(Oscillation, Chaos and Network Dynamics in Nonlinear Science)
• Crack Growth and Plastic Relaxation in a Drying Paste Layer

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