Approximate efficiency in repeated games with side-payments and correlated signals
研究了在长期关系中玩家可进行旁支付时，只要满足特定条件（如玩家有耐心、高效阶段博弈结果唯一等），即使存在私人监控和通信，也能实现近似效率，且无需偏差可被统计检测。
Side-payments are common in many long-term relationships. We show that when players can exchange side-payments, approximate efficiency is achievable in any repeated game with private monitoring and communication, so long as the players can observe their own payoffs and are sufficiently patient, the efficient stage-game outcome is unique, and the signal distribution has full support. Unlike existing results in the literature, our result does not require deviations be statistically detectable.