Near universal values of social inequality indices in self-organized critical models
Manna, S. S. 1Chakrabarti, Bikas K. 1Biswas, Soumyajyoti2
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作者信息
1. Satyendra Nath Bose Natl Ctr Basic Sci
2. SRM Univ AP
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Abstract
We have studied few social inequality measures associated with the sub-critical dynamical features (measured in terms of the avalanche size distributions) of four self-organized critical models while the corresponding systems approach their respective stationary critical states. It has been observed that these inequality measures (specifically the Gini and Kolkata indices) exhibit nearly universal values though the models studied here are widely different, namely the Bak-Tang-Wiesenfeld sandpile, the Manna sandpile and the quenched Edwards-Wilkinson interface, and the fiber bundle interface. These observations suggest that the self-organized critical systems have broad similarity in terms of these inequality measures. A comparison with similar earlier observations in the data of socio-economic systems with unrestricted competitions suggest the emergent inequality as a result of the possible proximity to the self-organized critical states. (c) 2022 Elsevier B.V. All rights reserved.
Key words
Self-organized criticality/BTW model/Manna model/Fiber bundle model/Gini index/Kolkata index
NSTL
Elsevier