The symmetry group of Feynman diagrams and consistency of the BPHZ renormalization scheme

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2021,（2）
• 所属期刊栏目: PARTICLES AND FIELDS
• 页码范围: 165-175
• 页数: 11页
• 语种: 英文
• DOI: 10.1088/1674-1137/abcd30

摘要

We study the relation between the symmetry group of a Feynman diagram and its reduced diagrams.We then prove that the counterterms in the BPHZ renormalization scheme are consistent with adding counterterms to the interaction Hamiltonian in all cases,including that of Feynman diagrams with symmetry factors.