SELF-ORGANIZED CRITICAL BEHAVIOR OF TWO-DIMENSIONAL FOAMS

Fractals ◽  
1996 ◽  
Vol 04 (03) ◽  
pp. 339-348 ◽  
Author(s):  
KYOZI KAWASAKI ◽  
TOHRU OKUZONO

A simple dynamical model for two-dimensional dry foam rheology is constructed for which surface tension effects and viscous dissipation at Plateau borders (intersections of three cell boundaries) are taken into account and is studied by computer simulation. Under externally applied shear strain increasing at small rates, the system exhibits avalanche-like release of stress that has been accumulating under increasing strain. There is a close similarity with earthquake models that show self-organized criticality (SOC). We discuss related simulation of two-dimensional wet foams under statically applied strain by Hutzler et al. [Phil. Mag. B71, 277 (1995)] showing critical behavior.

JETP Letters ◽  
2000 ◽  
Vol 72 (1) ◽  
pp. 26-29 ◽  
Author(s):  
S. M. Ishikaev ◽  
É. V. Matizen ◽  
V. V. Ryazanov ◽  
V. A. Oboznov ◽  
A. V. Veretennikov

2020 ◽  
pp. 42-50
Author(s):  
Helmut Satz

Complex systems and critical behavior in complex system are defined in terms of correlation between constituents in the medium, subject to screening by intermediate constituents. At a critical point, the correlation length diverges—as a result, one finds the scale-free behavior also observed for bird flocks. This behavior is therefore possibly a form of self-organized criticality.


2000 ◽  
Vol 11 (06) ◽  
pp. 1257-1262 ◽  
Author(s):  
COLIN CHISHOLM ◽  
NAEEM JAN ◽  
PETER GIBBS ◽  
AYŞE ERZAN

Recent work has shown that the distribution of steady state mutations for an asexual "bacteria" model has features similar to that seen in Self-Organized Critical (SOC) sandpile model of Bak et al. We investigate this coincidence further and search for "self-organized critical" state for bacteria but instead find that the SOC sandpile critical behavior is very sensitive; critical behavior is destroyed with small perturbations effectively when the absorption of sand is introduced. It is only in the limit when the length of the genome of the bacteria tends to infinity that SOC properties are recovered for the asexual model.


2020 ◽  
Vol 540 ◽  
pp. 123191 ◽  
Author(s):  
Hong-Li Zeng ◽  
Chen-Ping Zhu ◽  
Shu-Xuan Wang ◽  
Yan-Dong Guo ◽  
Zhi-Ming Gu ◽  
...  

1998 ◽  
Vol 35 (2) ◽  
pp. 301-306 ◽  
Author(s):  
Kuo-Chi Lin ◽  
Alex Sisti ◽  
Lee Chow

Author(s):  
Ervin Goldfain

Self-organized criticality (SOC) is a universal mechanism for self-sustained critical behavior in large-scale systems evolving outside equilibrium. Our report explores a tentative link between SOC and Lagrangian field theory, with the long-term goal of bridging the gap between complex dynamics and the non-perturbative behavior of quantum fields.


2018 ◽  
Vol 60 (6) ◽  
pp. 1180-1183 ◽  
Author(s):  
A. B. Babaev ◽  
A. K. Murtazaev ◽  
G. Ya. Ataeva ◽  
T. R. Rizvanova ◽  
M. R. Dzhamaludinov

1996 ◽  
Vol 54 (5) ◽  
pp. R4504-R4507 ◽  
Author(s):  
Gerald Baumann ◽  
Dietrich E. Wolf

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