Wick Theorem and Hopf Algebra Structure in Causal Perturbative Quantum Field Theory
We consider the general framework of perturbative quantum field theory for the pure Yang–Mills model. We give a more precise version of the Wick theorem using Hopf algebra notations for chronological products and not for Feynman graphs. Next, we prove that the Wick expansion property can be preserve...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-02-01
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| Series: | Universe |
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| Online Access: | https://www.mdpi.com/2218-1997/9/3/117 |