Both analytical and numerical results indicate a new mechanism of decoherence: when the environment is near to the critical point, quantum phase transition will enhance decoherence of the system.

• 解析分析和数值计算结果都揭示了一个导致二能级系统退相干（或环境的克斯密特回波衰减）的新机制--当环境处在量子临界点附近时，它的量子相变会加剧系统的退相干。