摘要
本文系统简洁地给出量子真空投影算符的三种基本排序形式,分别是正规排序、反正规排序和Weyl排序.由它们可以导出许多新的算符公式,在计算各种物理量时起到关键的作用.
Three kinds of ordering formulas for the vacuum projector |0><0|,i.e., normally ordered-, anti-normally ordered- and Weyl ordered- forms,are derived systematically and concisely. It is further deduced that many more operator identities play important roles in calculating various physical quantities.
作者
张春早
任刚
范洪义
ZHANG Chun-zao;REN Gang;FAN Hong-yi(School of Electronic Engineering,Huainan Normal University,Huainan,Anhui 232038,China;Department of Material Science and Engineering,University of Science and Technology of China,Hefei,Anhui 230026,China)
出处
《大学物理》
2019年第5期5-7,共3页
College Physics
基金
安徽省高等学校省级质量工程项目(2016gxk133)资助
关键词
真空投影算符
正规排序
反正规排序
Weyl排序
vacuum projection operators
normal ordering
anti-normal ordering
Weyl ordering
