Symmetry factors of Feynman diagrams and the homological perturbation lemma
Abstract We discuss the symmetry factors of Feynman diagrams of scalar field theories with polynomial potential. After giving a concise general formula for them, we present an elementary and direct proof that when computing scattering amplitudes using the homological perturbation lemma, each contrib...
| Main Authors: | , |
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| 格式: | 文件 |
| 语言: | English |
| 出版: |
SpringerOpen
2020-12-01
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| 丛编: | Journal of High Energy Physics |
| 主题: | |
| 在线阅读: | https://doi.org/10.1007/JHEP12(2020)088 |