Spontaneous symmetry breaking in local gauge quantum field theory; the Higgs mechanism
Spontaneous symmetry breaking in local gauge quantum field theory; the Higgs mechanism
复制标题
局域规范量子场论中的自发对称破缺；
DOI：
--
复制
发表时间：
1977
期刊：
影响因子：
--
通讯作者：
F. Strocchi
中科院分区：
文献类型：
--
作者：
F. Strocchi
分析了不定度规量子场论中的自发对称破缺，证明了Goldstone定理的推广。详细讨论了局域规范量子场论的情况，并给出了希格斯机制与戈德斯通机制发生的表征。希格斯现象是在一般的基础上解释的，没有引入所谓的希格斯场。其基本性质是第二类规范变换的局域内对称群与局域群之间的关系。当存在带电局域场时，第二类c数规范变换的自发对称破缺总是发生的。讨论了Wightman函数中质量隙的缺失和Higgs现象中与不间断发生器相关联的无质量粒子的出现所带来的影响。
Spontaneous symmetry breakings in indefinite metric quantum field theories are analyzed and a generalization of the Goldstone theorem is proved. The case of local gauge quantum field theories is discussed in detail and a characterization is given of the occurrence of the Higgs mechanism versus the Goldstone mechanism. The Higgs phenomenon is explained on general grounds without the introduction of the so-called Higgs fields. The basic property is the relation between the local internal symmetry group and the local group of gauge transformations of the second kind. Spontaneous symmetry breaking ofc-number gauge transformations of the second kind is shown to always occur if there are charged local fields. The implications about the absence of mass gap in the Wightman functions and the occurrence of massless particles associated with the unbroken generators in the Higgs phenomenon are discussed.