论文标题
量子场理论中的电荷分配
Electric charge assignment in quantum field theories
论文作者
论文摘要
在具有简单或半简单统一，本地或全球对称性的现场理论中，电荷与全球性相关。在电动量规理论中，即使在自发对称性破坏（SSB）之前也是这种情况，在该理论（SSB）中，这些数量的定义是为了扩展破裂后尊重保护法的Lagrangian。因此，仅考虑全局对称性，即使通常，电荷运算符是非亚洲对称性的对角线发电机的线性组合，也仅考虑全局对称性，就完成了给定多重的电荷分配（以JEJ的单位为单位）。在这项工作中，我们展示了如何从标准模型中的任何表示及其某些扩展中系统地构建该操作员，以3-3-1，左右对称和宏伟的统一模型。
In Field theories with simple or semi-simple unitary, local or global symmetries, the electric charge is related to a global one. This is the case also in electroweak gauge theories even before the spontaneous symmetry breaking (SSB), where these quantities are defined in order to expand the Lagrangian respecting the conservation laws after the breaking. So, the electric charge assignment within a given multiplet is done (in units of jej) considering only global symmetries, even though in general, the electric charge operator is a linear combination of the diagonal generators of the non-Abelian symmetry plus some Abelian factor. In this work we show how this operator can be systematically constructed from any representation in the Standard Model and some of its extensions as the 3-3-1, left-right symmetric and grand unified models.
