摘要
本文利用位移算符的性质以及相干态的性质很方便地推导了量子动力学模型的相干项.同时推导出约化密度矩阵的非对角元为两个相干态的内积.最后,我们在两个特殊情况下实现了宏观极限下的退相干.
In this paper, we deduce easily the coherent term of the quantum dynamical model by improving the character of displace operators and the character of coherent states. At the same time, we deduce the off-diagonal term of the reduced density matrix is the product of two coherent states. At last, we carry out decoherence of two special case in macroscopic limits.
出处
《安徽师范大学学报（自然科学版）》
CAS
2004年第1期34-36,共3页
Journal of Anhui Normal University(Natural Science)
基金
安徽省省级重点学科(原子与分子物理)基金项目(2002ZDXK).
