paper

The Topologically Twisted Index in the 't Hooft Limit and the Dual AdS Black Hole Entropy

arXiv:1908.01194 · doi:10.1103/PhysRevD.100.126019

Abstract

We study the topologically twisted index of supersymmetric Chern-Simons matter theory with gauge group in the 't Hooft limit, that is, for with fixed. In the regime where is fixed and large we find an analytical expression for the leading order term of the index. The leading term of the index matches precisely the Bekenstein-Hawking entropy of the dual asymptotically AdS magnetically charged black holes embedded in IIA supergrvity on AdS, after a standard Legendre transformation. We numerically explore the genus expansion of the topologically twisteed index beyond the leading order, focusing on the genus one contribution, that is, . We find qualitative agreement with the topological expansion of the free energy on at genus one. Our logarithmic in term constitutes a prediction for the one-loop effective action on the IIA supergravity side.

30 pages, 14 figures, 6 tables

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