セミナー: 山中 長閑氏
- Speaker: 山中 長閑氏
- Date: 10/1木 14:00- ハイブリッド: C215 + teams
- Title: Resolutions of the strong CP problem and the U(1) problem
概要:
We show that the topological charge of nonabelian gauge theory is not observable. This immediately leads to the resolution of the Strong CP problem, and also to the irrelevance of the anomalous breaking of the axial U(1) symmetry [1,2]. We then inspect the phenomenological consequences to hadron physics and particle physics due to the unphysicalness of the ’t Hooft vertex and the instanton/sphaleron induced processes. We also present a mechanism which resolves the axial U(1) problem without chiral anomaly, i.e. consistent with the Nambu-Goldstone nature of eta and eta’ mesons [3]. If the time allows, we also show the implication to the cosmology.
[1] N. Yamanaka, arXiv:2212.10994 [hep-th].
[2] N. Yamanaka, arXiv:2212.11820 [hep-ph].
[3] N. Yamanaka, arXiv:2411.02792 [hep-ph].