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arXiv · 1606.03036

Symmetry enhancements via 5d instantons, qW-algebrae and (1,0) superconformal index

Sergio Benvenuti·Giulio Bonelli·Massimiliano Ronzani·Alessandro Tanzini
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Abstract

We explore N=(1,0) superconformal six-dimensional theories arising from M5-branes probing a transverse A_k singularity. Upon circle compactification to 5 dimensions, we describe this system with a dual pq-web of five-branes and propose the spectrum of basic five-dimensional instanton operators driving global symmetry enhancement. For a single M5-brane, we find that the exact partition function of the 5d quiver gauge theory matches the 6d (1,0) index, which we compute by letter counting. We finally show that S-duality of the pq-web implies new relations among vertex correlators of qW-algebrae.

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Sergio Benvenuti, Giulio Bonelli, Massimiliano Ronzani, Alessandro Tanzini. 2016-06-09. Symmetry enhancements via 5d instantons, qW-algebrae and (1,0) superconformal index. https://doi.org/10.1007/jhep09(2016)053

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