Research Paper#Multi-Agent Systems, Phase Transitions, Statistical Physics🔬 ResearchAnalyzed: Jan 3, 2026 19:32
Active-Absorbing Phase Transitions in the Parallel Minority Game
Published:Dec 28, 2025 07:30
•1 min read
•ArXiv
Analysis
This paper investigates the Parallel Minority Game (PMG), a multi-agent model, and analyzes its phase transitions under different decision rules. It's significant because it explores how simple cognitive features at the agent level can drastically impact the large-scale critical behavior of the system, relevant to socio-economic and active systems. The study compares instantaneous and threshold-based decision rules, revealing distinct universality classes and highlighting the impact of thresholding as a relevant perturbation.
Key Takeaways
- •The study analyzes the Parallel Minority Game (PMG) with different decision rules.
- •Instantaneous rules show mean-field directed-percolation (MF-DP) scaling.
- •Threshold rules exhibit a distinct non-mean-field universality class.
- •Thresholding acts as a relevant perturbation to Directed Percolation (DP).
Reference
“Threshold rules produce a distinct non-mean-field universality class with β≈0.75 and a systematic failure of MF-DP dynamical scaling. We show that thresholding acts as a relevant perturbation to DP.”