| Speaker: | Ryutaro Matsudo (KEK) |
|---|---|
| Title: | Vector mesons on the wall |
| Date (JST): | Wed, Feb 24, 2021, 13:30 - 14:30 |
| Place: | Zoom |
| Related File: | 2644.pdf |
| Abstract: | We show that the effective theory for pions and $\eta'$ is inconsistent with a mixed anomaly involving the $\theta$-periodicity and the global symmetry unless there is a dynamical domain wall on which a $U(N_f)_{-N_ c}$ Chern-Simons theory is supported. When the domain wall has a boundary, we conclude that there should be a boundary term that couples the $U(N_f)_{-N_c}$ gauge field to the vector mesons. We also confirm that the recent proposal that the domain wall bounded by the string describes the baryon with spin $N_c/2$ by determining the coupling of the background gauge fields to the wall. We discuss the impact on physics of the chiral phase transition and the relation to the ``duality'' of QCD. This talk is based on the paper arXiv:2011.14637. |
