在马尔科夫环境下,利用共生纠缠度研究了耗散环境中耦合量子比特纠缠态及纠缠突然死亡的性质.研究结果表明:纠缠动力学演化与系统的温度、初始纠缠度及初始量子态密切相关；在一般情形下,由于环境的影响,纠缠突然死亡总会发生.通过数值模拟,发现存在一个特定的区域,此区域内系统的纠缠度衰减的很慢.在零温度近似下,给出了具体的纠缠突然死亡条件和计算纠缠突然死亡时间的表达式.
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