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Line Operator Quantum Numbers and Anomalies

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In this talk we will describe a new mechanism for studying anomalies of discrete symmetries in 4D gauge theories. This mechanism involves flowing to a pure abelian gauge theory where the anomaly can be computed in terms of the quantum numbers of electric and magnetic line operators. We demonstrate our program by computing the anomaly in SU(2) QCD with 2N fundamental fermions and show that for certain N, there is a new class of anomaly that exists for arbitrarily large N.

This talk is part of the Quantum Fields and Strings Seminars series.

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