STATISTICS OF TOPOLOGICAL DEFECTS AND SPATIOTEMPORAL CHAOS IN A REACTION-DIFFUSION SYSTEM

被引：100

作者：

HILDEBRAND, M ^{[1
]}

BAR, M ^{[1
]}

EISWIRTH, M ^{[1
]}

机构：

[1] MAX PLANCK GESELL, FRITZ HABER INST, D-14195 BERLIN, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.75.1503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The transition between rotating spirals and spatiotemporal chaos (''spiral turbulence'') in an excitable reaction-diffusion system is investigated by means of statistics of topological defects of the concentration field. The ratio of the variance and the mean value of the number of defects show a significant deviation from unity at this point. A change of the defect dynamics within the turbulent regime reveals a strong similarity to a liquid-to-gas transition, while a liquid-solid-like transition occurs upon a jumplike return to the region of spiral stability.

引用

页码：1503 / 1506

页数：4

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