A Farey Tail for Attractor Black Holes

Jan de Boer , Miranda C.N. Cheng , Robbert Dijkgraaf , Jan Manschot , Erik Verlinde

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classification ✦ hep-th

keywords blackholestheoryattractorellipticfareygenustail

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The microstates of 4d BPS black holes in IIA string theory compactified on a Calabi-Yau manifold are counted by a (generalized) elliptic genus of a (0,4) conformal field theory. By exploiting a spectral flow that relates states with different charges, and using the Rademacher formula, we find that the elliptic genus has an exact asymptotic expansion in terms of semi-classical saddle-points of the dual supergravity theory. This generalizes the known "Black Hole Farey Tail" of [1] to the case of attractor black holes.

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A Farey Tail for Attractor Black Holes

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