Effect of segregation on inequality in kinetic models of wealth exchange

Lennart Fernandes and Jacques Tempere ()
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Lennart Fernandes: Theory of Quantum and Complex Systems, Universiteit Antwerpen
Jacques Tempere: Theory of Quantum and Complex Systems, Universiteit Antwerpen

The European Physical Journal B: Condensed Matter and Complex Systems, 2020, vol. 93, issue 3, 1-8

Abstract: Abstract Empirical distributions of wealth and income can be reproduced using simplified agent-based models of economic interactions, analogous to microscopic collisions of gas particles. Building upon these models of freely interacting agents, we explore the effect of a segregated economic network in which interactions are restricted to those between agents of similar wealth. Agents on a 2D lattice undergo kinetic exchanges with their nearest neighbours, while continuously switching places to minimize local wealth differences. A spatial concentration of wealth leads to a steady state with increased global inequality and a magnified distinction between local and global measures of combatting poverty. Individual saving propensity proves ineffective in the segregated economy, while redistributive taxation transcends the spatial inhomogeneity and greatly reduces inequality. Adding fluctuations to the segregation dynamics, we observe a sharp phase transition to lower inequality at a critical temperature, accompanied by a sudden change in the distribution of the wealthy elite. Graphical abstract

Keywords: Statistical; and; Nonlinear; Physics (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (7)

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DOI: 10.1140/epjb/e2020-100534-7

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