Revisiting Wess-Zumino-Witten terms
Yasunori Lee, Kantaro Ohmori, Yuji Tachikawa
SciPost Phys. 10, 061 (2021) · published 10 March 2021
- doi: 10.21468/SciPostPhys.10.3.061
- Submissions/Reports
-
Abstract
We revisit various topological issues concerning four-dimensional ungauged and gauged Wess-Zumino-Witten (WZW) terms for $SU$ and $SO$ quantum chromodynamics (QCD), from the modern bordism point of view. We explain, for example, why the definition of the $4d$ WZW terms requires the spin structure. We also discuss how the mixed anomaly involving the 1-form symmetry of $SO$ QCD is reproduced in the low-energy sigma model.
Cited by 18
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Yasunori Lee,
- 2 Kantaro Ohmori,
- 1 Yuji Tachikawa
- 1 Kavli Institute for the Physics and Mathematics of the Universe [IPMU]
- 2 Stony Brook University [SUNY Stony Brook]
Funders for the research work leading to this publication