Journal
CHINESE PHYSICS C
Volume 45, Issue 2, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1674-1137/abcd30
Keywords
BPHZ renormalization; Feynman diagram; symmetry group; perturbation Hamiltonian
Categories
Funding
- National Natural Science Foundation of China [11805152, 10575080, 11947301]
- Natural Science Basic Research Program of Shaanxi Province [2019JQ-107]
- Shaanxi Key Laboratory for Theoretical Physics Frontiers in China
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The study examines the relationship between the symmetry group of a Feynman diagram and its reduced diagrams, and proves that counterterms in the BPHZ renormalization scheme are consistent with adding counterterms to the interaction Hamiltonian in all cases, including those with symmetry factors.
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.
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