期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 76, 期 3, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.76.034002
关键词
pattern formation; reaction-diffusion; branching pattern; cellular automaton; DLA; bacterial colony
In the present paper, I propose a simple generic discretized model for the formation of various patterns based on a reaction-diffusion model of the growth patterns of bacterial colonies. Bacterial colonies show several patterns, with a characteristic pattern being a branching dendritic one with various branch densities. In addition to living systems, these branching patterns can also be observed in physical and chemical systems. Several reaction-diffusion models have been proposed to describe their formation. The model proposed here is a simplified discretized one based on previous models and involves three variables; namely, activators, inactivators, and the substrate. By changing only the mobility of the activators and the initial substrate, the proposed model can reproduce different patterns that are based on the branching patterns. I also investigate the characteristics of the shape and growth rate of the pattern formation.
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