Anomalies, 2-groups, 6d susy


Intriligator, K. (2018). Anomalies, 2-groups, 6d susy. Perimeter Institute. https://pirsa.org/18110063


Intriligator, Kenneth. Anomalies, 2-groups, 6d susy. Perimeter Institute, Nov. 13, 2018, https://pirsa.org/18110063


          @misc{ pirsa_18110063,
            doi = {10.48660/18110063},
            url = {https://pirsa.org/18110063},
            author = {Intriligator, Kenneth},
            keywords = {Quantum Fields and Strings},
            language = {en},
            title = {Anomalies, 2-groups, 6d susy},
            publisher = {Perimeter Institute},
            year = {2018},
            month = {nov},
            note = {PIRSA:18110063 see, \url{https://pirsa.org}}

Kenneth Intriligator University of California, San Diego


Part 1 is about anomalies and how they can deform generalized global symmetry into 2-group global symmetry.  This is illustrated with simple QFT examples in 4d.  Part 2 is about 6d.

6d theories with 2-group symmetry exist, but cannot be conformal.  6d superconformal theories (SCFTs) cannot have 2-group or higher-form, generalized global symmetries.  This requires cancellation of mixed gauge and global terms in the anomaly polynomial.   SCFT relations between conformal and ’t Hooft anomalies will also be discussed.   Based on papers with Cordova and Dumitrescu.