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arXiv · 1504.08009

The string origin of dyonic ${\cal N}=8$ supergravity and its simple Chern-Simons duals

Adolfo Guarino·Daniel L. Jafferis·Oscar Varela
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Abstract

We clarify the higher-dimensional origin of a class of dyonic gaugings of $D=4$ ${\cal N}=8$ supergravity recently discovered, when the gauge group is chosen to be ISO(7). This dyonically-gauged maximal supergravity arises from consistent truncation of massive IIA supergravity on $S^6$, and its magnetic coupling constant descends directly from the Romans mass. The critical points of the supergravity uplift to new AdS$_4$ massive type IIA vacua. We identify the corresponding CFT$_3$ duals as super-Chern-Simons-matter theories with simple gauge group SU$(N)$, with level $k$ given by the Romans mass. In particular, we find a critical point that uplifts to the first explicit ${\cal N}=2$ AdS$_4$ massive IIA background. We compute its free energy and that of the candidate dual Chern-Simons theory by localisation to a solvable matrix model, and find perfect agreement. This provides the first AdS$_4$/CFT$_3$ precision match in massive type IIA string theory.

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Adolfo Guarino, Daniel L. Jafferis, Oscar Varela. 2015-04-29. The string origin of dyonic ${\cal N}=8$ supergravity and its simple Chern-Simons duals. https://doi.org/10.1103/physrevlett.115.091601

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