Strict Localization in Quantum Field Theory
Strict Localization in Quantum Field Theory
复制标题
量子场论中的严格局域化
DOI：
--
复制
发表时间：
1961
期刊：
影响因子：
--
通讯作者：
J. M. Knight
中科院分区：
文献类型：
--
作者：
J. M. Knight
给出了量子场论中严格局域态的定义。这个定义是基于把场算符的乘积作为理论的主要可测量。给出了局域态的一个例子，表明当自由场与限制在时空有界区域内的外部电流相互作用时，就会出现这种状态。它是通过一个图形技术，具有有限数量的粒子的状态不能满足本地化的定义。研究了局域态的一种简单表示，并给出了支持其普遍性和唯一性的论据。
A definition of strict localization of states in quantum field theory is presented. This definition is based on considering products of field operators as the primary measurable quantities of the theory. An example of a localized state is given, showing that such a state arises when a free field interacts with an external current that is limited to a bounded region of space‐time. It is shown by means of a graphical technique that a state having a finite number of particles cannot satisfy the definition of localization. A simple representation of localized states is investigated, and arguments are given to support its generality and uniqueness.