Quantization makes investors avoid the moral hazard

摘要

Quantum “cash in a hat” game has been investigated in this paper. The new quantum game can cease the “moral hazard” and naturally leads both players to the Pareto optimal solution under the maximal entangled state. We also exploit the influence of the degree of the entanglement on the quantum game. It is revealed that there exist two threshold, a classical threshold γ and a quantum threshold γ for γ ϵ [0, π/2]. The quantum game still behave “classically” if γ ≤ γ and moral hazard can be overcome if γ > γ. It should be underlined that there exists a Nash equilibrium between γ and γ, which is unfortunately not Pareto optimal.