The giant graviton expansion in $Ad{S}_5\times S^5$

Abstract

The superconformal index of $\frac{1}{2}$-BPS states of $N=4$ U(N) super Yang-Mills theory has a known infinite $q$-series expression with successive terms suppressed by $q^N$. We derive a holographic bulk interpretation of this series by evaluating the corresponding functional integral in the dual $Ad{S}_5\times S^5$. The integral localizes to a product of small fluctuations of the vacuum and of the collective modes of an arbitrary number of giant-gravitons wrapping an $S^3$ of maximal size inside the $S^5$. The quantum mechanics of the small fluctuations of one maximal giant is described by a supersymmetric version of the Landau problem. The quadratic fluctuation determinant reduces to a sum over the supersymmetric ground states, and precisely reproduces the first non-trivial term in the infinite series. Further, we show that the terms corresponding to multiple giants are obtained precisely by the matrix versions of the above super-quantum-mechanics.

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Cited by in corpus (3)

• M2-M5 giant graviton expansions
• Localization and wall-crossing of giant graviton expansions in AdS${}_5$
• Precision holography of AdS${}_5$ bubbling geometries