标题： 相对论量子力学和量子场论 显示英文标题

标题： Relativistic quantum mechanics and quantum field theory

摘要： 相对论量子力学可以被认为始于寻找对应于每种内禀自旋的波方程。 然而，相对论量子物理与非相对论波动力学有根本的不同。 它需要一种允许粒子产生和湮灭的形式体系。 这种问题只有在称为量子场论的框架中才能得到恰当处理。 本文是对量子场论中出现的一些引人入胜的新特性的半历史叙述。 没有对形式体系的基本介绍，这种讨论是不可能的。 因此，文中包含了一些以较小字体印刷的数学内容。 本文主要面向熟悉经典力学基本概念和基本量子力学的读者，尽管我努力为有兴趣的非物理读者提供一些学科的风味。 显示英文摘要

摘要： Relativistic quantum mechanics can be considered to have begun with a search for wave equations corresponding to each intrinsic spin. However, relativistic quantum physics differs fundamentally from the non-relativistic wave mechanics. It requires a formalism allowing \ creation and destruction of particles. This gets proper treatment only in a framework called quantum field theory. This article is a semi-historic account of the intriguing new features which emerge as a part of quantum field theory. Such a discussion is impossible without a basic presentation of the formalism itself. Hence some mathematics is included in finer print. The article is directed mostly to those familiar with essential classical mechanics and basic quantum mechanics, though I strive to provide a flavour of the subject to the keenly interested non-physics reader.