# Topological charge

A few slides are given for explaining the unobservability of the topological charge in nonabelian gauge theory and related phenomenology.

## Update history

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

## Link to papers

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]