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arXiv · 2411.16837

Class $\mathcal{S}$ superconformal indices from maximal supergravity

Ritabrata Bhattacharya·Abhay Katyal·Oscar Varela
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Abstract

We present a new gauging of maximal supergravity in five spacetime dimensions with gauge group containing ISO(5), involving the local scaling symmetry of the metric, and admitting a supersymmetric anti-de Sitter vacuum. We show this maximal supergravity to arise by consistent truncation of M-theory on the (non-spherical, non-parallelisable) six-dimensional geometry associated to a stack of $N$ M5-branes wrapped on a smooth Riemann surface. The existence of this truncation allows us to holographically determine the complete, universal spectrum of light operators of the dual four-dimensional $\mathcal{N}=2$ theory of class $\mathcal{S}$. We then compute holographically the superconformal index of the dual field theory at large-$N$, finding perfect agreement with previously known field theory results in specific limits.

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Ritabrata Bhattacharya, Abhay Katyal, Oscar Varela. 2025-05-13. Class $\mathcal{S}$ superconformal indices from maximal supergravity. https://arxiv.org/abs/2411.16837

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