摘要
介绍了量子力学中三种绘景的公式以及它们的推导.这三种绘景是:薛定谔绘景﹑海森伯绘景和相互作用绘景.指出了一些教科书上有关公式的瑕疵,并说明其原因.给出了薛定谔绘景和相互作用绘景中的时间演化算符之间关系的正确的表达式.通常的教科书上限定初始时刻为0,因此给出了不正确的表达式.明确了通常的量子力学教科书上讲的含时微扰公式的来源.
The formalisms of the three representations in quantum mechanics are introduced. They are Schr? dinger representation,Heisenburg representation and interaction representation. The mistakes in some text books and their reasons are pointed out. A correct expression between the time evolution operators in the Schr? dinger and interaction representations is given. The expression in some text books is wrong because the initial time is set as zero. The time-dependent perturbation formula is derived.
作者
王怀玉
WANG Huai-yu(Department of Physics,Tsinghua University,Beijing 100084,China)
出处
《大学物理》
2018年第12期7-10,共4页
College Physics
关键词
薛定谔绘景
海森伯绘景
相互作用绘景
微扰展开公式
Schrodinger representation
Heisenburg representation
interaction representation
perturbation series formula
