Characterization of asymmetric fragmentation patterns in spatially extended systems

被引:29
|
作者
Rosa, RR
Sharma, AS
Valdivia, JA
机构
[1] INPE, Natl Inst Space Res, Lab Comp & Appl Math, BR-12201970 Sao Jose Dos Campos, SP, Brazil
[2] Univ Maryland, Dept Astron, College Pk, MD 20742 USA
[3] Univ Maryland, Dept Phys, College Pk, MD 20742 USA
来源
关键词
spatio-temporal complexity; amplitude fragmentation; extended systems; symmetry breaking; pattern dynamics;
D O I
10.1142/S0129183199000103
中图分类号
TP39 [计算机的应用];
学科分类号
081203 ; 0835 ;
摘要
Spatially extended systems yield complex patterns arising from the coupled dynamics of its different regions. In this paper we introduce a matrix computational operator, F-A, for the characterization of asymmetric amplitude fragmentation in extended systems. For a given matrix of amplitudes this operation results in an asymmetric-triangulation field composed by L points and I straight lines. The parameter (I - L)/L is a new quantitative measure of the local complexity defined in terms of the asymmetry in the gradient field of the amplitudes. This asymmetric fragmentation parameter is a measure of the degree of structural complexity and characterizes the localized regions of a spatially extended system and symmetry breaking along the evolution of the system. For the case of a random field, in the real domain, which has total asymmetry, this asymmetric fragmentation parameter is expected to have the highest value and this is used to normalize the values for the other cases. Here, we present a detailed description of the operator F-A and some of the fundamental conjectures that arises from its application in spatio-temporal asymmetric patterns.
引用
收藏
页码:147 / 163
页数:17
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