Related Experiment Video
Updated: Oct 23, 2025
06:18
The Collective Trust Game: An Online Group Adaptation of the Trust Game Based on the HoneyComb Paradigm
Published on: October 20, 2022
2.3K
Simulation of a generalized asset exchange model with economic growth and wealth distribution
Kang K L Liu1, N Lubbers1, W Klein1,2
1Department of Physics, Boston University, Boston, Massachusetts 02215, USA.
Physical Review. E
|August 20, 2021
Summary
This study generalizes the agent-based yard-sale model to include economic growth, revealing a critical point at λ=1. Below this point, agents experience wealth growth and mobility; above it, wealth concentrates, and mobility ceases.
Area of Science:
- Statistical mechanics applied to economic systems
- Agent-based modeling of wealth distribution
- Economic growth and inequality dynamics
Background:
- Traditional economic models often simplify wealth distribution and growth dynamics.
- Agent-based models offer a powerful framework for simulating complex economic interactions.
- Understanding the statistical properties of economic systems is crucial for policy-making.
Purpose of the Study:
- To generalize the agent-based yard-sale model by incorporating exponential economic growth.
- To investigate the impact of growth distribution on wealth inequality and economic mobility.
- To explore the applicability of equilibrium statistical mechanics to economic phenomena.
Main Methods:
- Generalization of the agent-based yard-sale model.
- Numerical simulations to analyze wealth distribution and agent mobility.
- Definition of system energy to assess thermodynamic equilibrium.
- Estimation of critical exponents and comparison with mean-field theory.
Main Results:
- Identification of a critical point at parameter λ=1, distinguishing between economic mobility and wealth condensation phases.
- Demonstration of exponential wealth growth for all agents when λ<1.
- Observation of wealth condensation and lack of mobility for λ≥1.
- System found to be in thermodynamic equilibrium for λ<1.
Conclusions:
- Economic growth benefits all agents if its distribution is equitable.
- The model exhibits distinct phases analogous to phase transitions in physics.
- The study provides insights into applying equilibrium statistical mechanics to economic systems.
Related Concept Videos
00:57Population Growth
26.2K
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
26.2K
02:20Dynamic Equilibrium
57.5K
A reversible chemical reaction represents a chemical process that proceeds in both forward (left to right) and reverse (right to left) directions. When the rates of the forward and reverse reactions are equal, the concentrations of the reactant and product species remain constant over time and the system is at equilibrium. A special double arrow is used to emphasize the reversible nature of the reaction. The relative concentrations of reactants and products in equilibrium systems vary greatly;...
57.5K
01:29Econometric Views (EViews)
308
Econometric Views, often stylized as EViews, is a package that merges statistical analysis with econometric studies. It is designed to provide tools for time series analysis, forecasting, and econometric model simulation. The software originated from MicroTSP software and has evolved significantly since its inception in 1981. The history of EViews is marked by a continuous effort to enhance its computational speed and user interface. It was initially developed for large computing systems but...
308
01:26Equity Theory
48
Equity theory explains how our sense of fairness influences the dynamics of close relationships. Rooted in social psychology, the theory posits that individuals evaluate fairness by comparing the ratio of their contributions to the rewards they receive. Relationship satisfaction is highest when these ratios are perceived as balanced between partners, promoting mutual reciprocity and a sense of justice.Equity vs. Equality in RelationshipsEquity is distinct from equality. Fairness does not...
48
01:23Mechanistic Models: Compartment Models in Individual and Population Analysis
114
Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least...
114
01:14Multicompartment Models: Overview
311
Multicompartment models are mathematical constructs that depict how drugs are distributed and eliminated within the body. They segment the body into several compartments, symbolizing various physiological or anatomical areas connected through drug transfer processes such as absorption, metabolism, distribution, and elimination.
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
These models offer a more comprehensive representation of drug behavior in the body than one-compartment models. They accommodate the complexity of drug distribution,...
311