Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Physica Scripta

Complex dynamical analysis of the Frackiewicz quantum commons game with bounded rationality

Xingjing Zhang, Nengfa Wang, Kai Gu, Zixin Liu

Published Nov 27, 2025• 1 citation
Publisher

Abstract

Abstract In the classical commons game, shepherds’ complete rationality causes the Tragedy of the Commons (ToC). Based on bounded rationality, we develop a dynamic Frackiewicz quantum commons game model to explore quantum entanglement’s effects on grazing strategies and profits, analyze quantum equilibrium stability, and apply synchronization control. Our Contributions: (1) The stability of quantum equilibrium depends on the adjustment speed and the squeezing parameter: it remains stable at low adjustment speeds and when the squeezing parameter is close to its critical value (i.e., π 4 ), but exhibits bifurcation or chaos otherwise. (2) Enhanced entanglement expands the stability region, mitigates individual rationality-induced conflicts, and boosts collective profits. Within the Frackiewicz framework, the quantum model optimizes ToC outcomes: the number of sheep never exceeds the classical level, while profits rise with entanglement and never fall below the classical level. (3) Synchronization control ensures strategy evolution convergence to stabilize the system. Physically, entanglement strengthens strategy correlations, suppresses bounded rationality-induced chaos, and expands the stable parameter region, offering a quantum solution to ToC.

DOI
10.1088/1402-4896/ae2571

Related papers

Dynamics of a quantum Cournot-Bertrand duopoly model based on bounded rationality and product substitutability

Yu-Chung Chang

The development of quantum information theory based on quantum entangled states is advancing rapidly and has promoted the emergence of quantum game theory. Quantum game theory is quantum information processing applied to classical games, which solves problems that classical games cannot solve. This paper explores the quantum Cournot-Bertrand game model of two firms in a duopoly market with bounded rationality and product substitutability. The first and second firms choose production output and sales price as their decision variables, respectively. We first define the quantum Cournot-Bertrand dynamical system and study the existence and locally stable conditions of equilibrium points. Then we explore bifurcation conditions and bifurcation types. Finally, we do the bifurcation analysis and explore the impacts of the model parameters as the potential market size of products, the two firms' linear marginal cost, the players' speed of strategy adjustment, the product substitution index, and the quantum entanglement degree on the Nash equilibrium stability and bifurcation using numerical analysis and simulation, and provide economic explanations for the results.

Quantum Information Processing•Jul 9, 2025•6 citations

The Complexion of Multi-period Quantum Cournot Duopoly Game with Bounded Rationality Based on Asymmetric Information

Xinli Zhang, Jiahe Zhang

Abstract In the Cournot duopoly market, each firm is not completely rational, one firm's possession of information is not symmetrical, and their Nash equilibria are also usually inferior to Pareto optimality. The intersection of quantum game theory, nonlinear dynamics and asymmetric information may be an effective way to solve this problem. In this paper, we set up a multi-period quantum Cournot duopoly game model with bounded rationality based on asymmetric information, investigate the effects of quantum entanglement and asymmetric information on the local stability of quantum Nash equilibrium and complex dynamic behavior of the system. The result shows that an increase in the quantum entanglement decreases the quantum Nash equilibrium local stability and accelerates the occurrence of the system’s chaotic behavior, while the asymmetric information stabilizes the quantum Nash equilibrium and suppresses the chaotic behavior.The contradictive impact on the local stability of quantum Nash equilibrium creates the interesting properties of the game. Numerical simulations demonstrate these complex dynamical features via bifurcation, strange attractors, fractal dimensions and sensitivity to initial conditions.

•Oct 5, 2022•0 citations

Dynamics of a Quantum Common-Pool Resource Game with Homogeneous Players’ Expectations

Juan Grau-Climent, Luis García-Pérez, Ramón Alonso‐Sanz +1 more

In this work, we analyse a common-pool resource game with homogeneous players (both have boundedly rational expectations) and entanglement between players' strategies. The quantum model with homogeneous expectations is a differential approach to the game since, to the best of our knowledge, it has hardly been considered in previous works. The game is represented using a Cournot type payoff functions, limited to the maximum capacity of the resource. The behaviour of the dynamics is studied considering how the fixed points (particularly the Nash equilibrium) and the stability of the system vary depending on the different values of the parameters involved in the model. In the analysis of this game, it is especially relevant to consider the extent to which the resource is exploited, since the output of the players is highly affected by this issue. It is studied in which cases the resource can be overexploited, adjusting the parameters of the model to avoid this scenario when it is possible. The results are obtained from an analytical point of view and also graphically using bifurcation diagrams to show the behaviour of the dynamics.

Entropy•Nov 25, 2023•2 citations

Chaotic dynamics of a quantum Cournot duopoly game with heterogeneous expectations

Yuhuai Zhang, Jing Yuan, Yili Zhang

On the basis of the bounded rationality and adaptive expectations, we investigate the dynamics of quantum Cournot duopoly game with heterogeneous players by using the Li et al. scheme. Further, we discuss the effect of quantum entanglement on local stability of the system. The results show that: (i) The special form of quantum Cournot duopoly game is the classical Cournot duopoly game, and the quantum Cournot duopoly game with naïve expectation is also a special form of quantum Cournot duopoly game with adaptive expectation. (ii) The increase or decrease of the stable region is dependent on the degree of quantum entanglement. It is related to the difference of relative marginal cost. (iii) The numerical simulation reveals the complexity characteristics of quantum dynamic Cournot game system through the analysis of stability region, bifurcation, strange attractor and sensitivity to initial conditions, and shows the difference from the classical dynamic Cournot model.

International Journal of Quantum Information•Feb 3, 2023•4 citations

A Statistically Robust Analysis of the N-Player Quantum Public Goods Game on a Calibrated Noise Model

Kartikeyan Premkumar, K Soveet Kumar Prusty, Shweta S. Aladakatti +1 more

This paper investigates the strategic implications of quantum mechanics on the N-Player Public Goods Game (PGG), a canonical model for the "Tragedy of the Commons." Classically, the PGG is dominated by a single, socially suboptimal Nash Equilibrium where all players 'defect' (free ride), leading to a collective loss. We investigate whether quantum strategies, specifically those that utilize multi-particle entanglement, can overcome this problem. We construct and evaluate three different strategies—a classical 'All Defect' benchmark, an 'Independent Quantum' strategy using superposition, and a 'Coordinated Quantum' strategy using an N-qubit entangled state—for N = 4 and N=5 player games and different pot multipliers (m = 1. 5, 2. 0). These techniques are run on a noise model calibrated to the IBM ibmq_manila quantum device, giving an honest estimate of performance on near-term hardware. Methodologically, we use repeated simulation for statistical robustness, reporting numbers with 95% confidence intervals. Our results exhibit a deep and statistically significant quantum benefit: the entangled approach systematically forms a cooperative Quantum Nash Equilibrium that achieves almost optimal payoffs, far surpassing the classical and independent quantum methods. Nevertheless, an extensive examination of the noise mechanisms at play shows that the scalability of this quantum solution is inherently limited in the Noisy Intermediate-Scale Quantum (NISQ) era. The interaction between error accumulation in the CNOT cascade needed for state preparation and the intrinsic decoherence of the entangled GHZ state produces an escalating failure mechanism that puts a bound on the realizable size of the game. This paper thereby offers both evidence of quantum advantage over a social dilemma and a realistic appraisal of the hardware-dictated constraints that will have to be overcome before such solutions are scalable.

International Conference on Next-Gen Quantum and Advanced Computing: Algorithms, Security, and Beyond (NQComp)•Mar 5, 2026•0 citations

The multiplayer generalizations of Frackiewicz and Li-Du-Massar quantum schemes

Nengfa Wang, Zhe Yang

Abstract Drawing inspiration from the Frackiewicz and Li-Du-Massar quantum schemes, we provide some multiplayer generalizations of their techniques. Initially, we introduce a multiplayer version of the Frackiewicz quantum scheme, and give quantum Cournot oligopoly games with both three and n players. Our findings indicate that quantum equilibrium profits decrease monotonically with increasing entanglement levels of environments participated by oneself, but increase monotonically with the entanglement levels of other players. Subsequently, we present a multiplayer extension of the Li-Du-Massar quantum scheme, and analyze quantum Cournot oligopoly games with three and n players. We observe that quantum equilibrium profit exhibits a positive correlation with entanglement levels. Furthermore, the quantum equilibrium quantity and profit exhibit a negative correlation with the number of players for both multiplayer quantum schemes.

Physica Scripta•Mar 14, 2024•3 citations
Abstract In the classical commons game, shepherds’ complete rationality causes the Tragedy of the Commons (ToC). Based on bounded rationality, we develop a dynamic Frackiewicz quantum commons game model to explore quantum entanglement’s effects on grazing strategies and profits, analyze quantum equilibrium stability, and apply synchronization control. Our Contributions: (1) The stability of quantum equilibrium depends on the adjustment speed and the squeezing parameter: it remains stable at low adjustment speeds and when the squeezing parameter is close to its critical value (i.e., π 4 ), but exhibits bifurcation or chaos otherwise. (2) Enhanced entanglement expands the stability region, mitigates individual rationality-induced conflicts, and boosts collective profits. Within the Frackiewicz framework, the quantum model optimizes ToC outcomes: the number of sheep never exceeds the classical level, while profits rise with entanglement and never fall below the classical level. (3) Synchronization control ensures strategy evolution convergence to stabilize the system. Physically, entanglement strengthens strategy correlations, suppresses bounded rationality-induced chaos, and expands the stable parameter region, offering a quantum solution to ToC.
The development of quantum information theory based on quantum entangled states is advancing rapidly and has promoted the emergence of quantum game theory. Quantum game theory is quantum information processing applied to classical games, which solves problems that classical games cannot solve. This paper explores the quantum Cournot-Bertrand game model of two firms in a duopoly market with bounded rationality and product substitutability. The first and second firms choose production output and sales price as their decision variables, respectively. We first define the quantum Cournot-Bertrand dynamical system and study the existence and locally stable conditions of equilibrium points. Then we explore bifurcation conditions and bifurcation types. Finally, we do the bifurcation analysis and explore the impacts of the model parameters as the potential market size of products, the two firms' linear marginal cost, the players' speed of strategy adjustment, the product substitution index, and the quantum entanglement degree on the Nash equilibrium stability and bifurcation using numerical analysis and simulation, and provide economic explanations for the results.
Abstract In the Cournot duopoly market, each firm is not completely rational, one firm's possession of information is not symmetrical, and their Nash equilibria are also usually inferior to Pareto optimality. The intersection of quantum game theory, nonlinear dynamics and asymmetric information may be an effective way to solve this problem. In this paper, we set up a multi-period quantum Cournot duopoly game model with bounded rationality based on asymmetric information, investigate the effects of quantum entanglement and asymmetric information on the local stability of quantum Nash equilibrium and complex dynamic behavior of the system. The result shows that an increase in the quantum entanglement decreases the quantum Nash equilibrium local stability and accelerates the occurrence of the system’s chaotic behavior, while the asymmetric information stabilizes the quantum Nash equilibrium and suppresses the chaotic behavior.The contradictive impact on the local stability of quantum Nash equilibrium creates the interesting properties of the game. Numerical simulations demonstrate these complex dynamical features via bifurcation, strange attractors, fractal dimensions and sensitivity to initial conditions.
In this work, we analyse a common-pool resource game with homogeneous players (both have boundedly rational expectations) and entanglement between players' strategies. The quantum model with homogeneous expectations is a differential approach to the game since, to the best of our knowledge, it has hardly been considered in previous works. The game is represented using a Cournot type payoff functions, limited to the maximum capacity of the resource. The behaviour of the dynamics is studied considering how the fixed points (particularly the Nash equilibrium) and the stability of the system vary depending on the different values of the parameters involved in the model. In the analysis of this game, it is especially relevant to consider the extent to which the resource is exploited, since the output of the players is highly affected by this issue. It is studied in which cases the resource can be overexploited, adjusting the parameters of the model to avoid this scenario when it is possible. The results are obtained from an analytical point of view and also graphically using bifurcation diagrams to show the behaviour of the dynamics.
On the basis of the bounded rationality and adaptive expectations, we investigate the dynamics of quantum Cournot duopoly game with heterogeneous players by using the Li et al. scheme. Further, we discuss the effect of quantum entanglement on local stability of the system. The results show that: (i) The special form of quantum Cournot duopoly game is the classical Cournot duopoly game, and the quantum Cournot duopoly game with naïve expectation is also a special form of quantum Cournot duopoly game with adaptive expectation. (ii) The increase or decrease of the stable region is dependent on the degree of quantum entanglement. It is related to the difference of relative marginal cost. (iii) The numerical simulation reveals the complexity characteristics of quantum dynamic Cournot game system through the analysis of stability region, bifurcation, strange attractor and sensitivity to initial conditions, and shows the difference from the classical dynamic Cournot model.
This paper investigates the strategic implications of quantum mechanics on the N-Player Public Goods Game (PGG), a canonical model for the "Tragedy of the Commons." Classically, the PGG is dominated by a single, socially suboptimal Nash Equilibrium where all players 'defect' (free ride), leading to a collective loss. We investigate whether quantum strategies, specifically those that utilize multi-particle entanglement, can overcome this problem. We construct and evaluate three different strategies—a classical 'All Defect' benchmark, an 'Independent Quantum' strategy using superposition, and a 'Coordinated Quantum' strategy using an N-qubit entangled state—for N = 4 and N=5 player games and different pot multipliers (m = 1. 5, 2. 0). These techniques are run on a noise model calibrated to the IBM ibmq_manila quantum device, giving an honest estimate of performance on near-term hardware. Methodologically, we use repeated simulation for statistical robustness, reporting numbers with 95% confidence intervals. Our results exhibit a deep and statistically significant quantum benefit: the entangled approach systematically forms a cooperative Quantum Nash Equilibrium that achieves almost optimal payoffs, far surpassing the classical and independent quantum methods. Nevertheless, an extensive examination of the noise mechanisms at play shows that the scalability of this quantum solution is inherently limited in the Noisy Intermediate-Scale Quantum (NISQ) era. The interaction between error accumulation in the CNOT cascade needed for state preparation and the intrinsic decoherence of the entangled GHZ state produces an escalating failure mechanism that puts a bound on the realizable size of the game. This paper thereby offers both evidence of quantum advantage over a social dilemma and a realistic appraisal of the hardware-dictated constraints that will have to be overcome before such solutions are scalable.
Abstract Drawing inspiration from the Frackiewicz and Li-Du-Massar quantum schemes, we provide some multiplayer generalizations of their techniques. Initially, we introduce a multiplayer version of the Frackiewicz quantum scheme, and give quantum Cournot oligopoly games with both three and n players. Our findings indicate that quantum equilibrium profits decrease monotonically with increasing entanglement levels of environments participated by oneself, but increase monotonically with the entanglement levels of other players. Subsequently, we present a multiplayer extension of the Li-Du-Massar quantum scheme, and analyze quantum Cournot oligopoly games with three and n players. We observe that quantum equilibrium profit exhibits a positive correlation with entanglement levels. Furthermore, the quantum equilibrium quantity and profit exhibit a negative correlation with the number of players for both multiplayer quantum schemes.