A few slides are given for explaining the unobservability of the topological charge in nonabelian gauge theory and related phenomenology.
2022.12.21 First upload
2022.12.23 Explanation of Ward-Takahashi identity approach added
2023.03.11 Short version for particle physics phenomenology uploaded
Unobservability of topological charge in nonabelian gauge theory, arXiv:2212.10994 [hep-th]
Unobservability of the topological charge in nonabelian gauge theory: Ward-Takahashi identity and phenomenological aspects, arXiv:2212.11820 [hep-ph]
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