New supergravity black string saddles reproduce the large-N topologically twisted index of 4d N=1 SCFTs on T^2 × Σ_g via the on-shell action I = -π i c/(12τ).
Euclidean Supergravity in Five Dimensions
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We construct a 5D, N = 2 Euclidean theory of supergravity coupled to vector multiplets. Upon reducing this theory over a circle we recover the action of 4D, N = 2 Euclidean supergravity coupled to vector multiplets.
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Macroscopic origin of the topologically twisted index on $T^2 \times \Sigma_{\mathfrak{g}}$
New supergravity black string saddles reproduce the large-N topologically twisted index of 4d N=1 SCFTs on T^2 × Σ_g via the on-shell action I = -π i c/(12τ).