用纠缠态表象推导广义Ehrenfest定理

大学物理 ›› 2009, Vol. 28 ›› Issue (5): 30-30.

用纠缠态表象推导广义Ehrenfest定理

张运海马美娟

菏泽学院物理系,山东菏泽274015

出版日期:2009-05-20 发布日期:2009-05-20

Deduction of generalized Ehrenfest theorem by using the entangled state representation

Online:2009-05-20 Published:2009-05-20

摘要/Abstract

摘要： 利用两粒子相对坐标和总动量的共同本征态｜η〉构成的连续变量纠缠态表象，推导了转动系统的Ehrenfest定理，从而说明了在满足某些近似的情况下，量子力学不但能够与经典物理完美自洽，而且利用量子力学的规律可以导出相应的经典物理规律．

关键词: 量了力学, 纠缠态表象, 广义Ehrenfest定理

Abstract: The Generalized Ehrenfest theorem is deduced by using the entangled state representation, that is the common eigenstate of relative coordinate and general momentum of two particles. It is shown that not only quantum mechanics is self-consistent with classical physics, but also the corresponding classical physics law could be deduced by virtue of the quantum mechanics law.

Key words: quantum mechanics, entangled state representation, generalized Ehrenfest theorem

中图分类号:

O413.1

张运海马美娟. 用纠缠态表象推导广义Ehrenfest定理[J]. 大学物理, 2009, 28(5): 30-30.