The global anomalies of (2,0) superconformal field theories in six dimensions

Abstract

We compute the global gauge and gravitational anomalies of the A-type (2,0) superconformal quantum field theories in six dimensions, and conjecture a formula valid for the D- and E-type theories. We show that the anomaly contains terms that do not contribute to the local anomaly but that are crucial for the consistency of the global anomaly. A side result is an intuitive picture for the appearance of Hopf-Wess-Zumino terms on the Coulomb branch of the (2,0) theories.

arXiv comment35 pages, 2 figures. v2: typos corrected, some clarifications added in the introduction and in Section 4.6, version to be published in JHEP

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• Topological field theories on manifolds with Wu structures
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