Exact Stringy Microstates from Gauge Theories

Abstract

We study how the microstates of BPS sectors in string theory are organized in the dual $U(N)$ gauge theory. The microstates take the form of a coherent sum of stacks of branes and their open/closed string excitations. We propose a prescription to holographically construct the indices of string/brane configurations by analyzing the modifications of determinant operators in gauge theory. The string/brane configurations should be interpreted in the tensionless limit, but their indices are well-defined at finite $N$. In various examples, we provide evidence that a sum, of the giant graviton-type recently proposed in the literature, over all such configurations gives the finite $N$ gauge theory index. Finally, we discuss how these microstates assemble in the BPS Hilbert space and in what circumstances the branes can form bound states to produce black hole degeneracies.

37+appendix; v2, v3: minor revisions and clarifications, references added

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Cited by in corpus (8)

• $\mathcal{N}=2^{\ast }$ Schur indices
• Finite $N$ indices and the giant graviton expansion
• Large $N$ and large representations of Schur line defect correlators
• Coherent state operators, giant gravitons, and gauge-gravity correspondence
• The giant graviton expansion in $Ad{S}_5\times S^5$
• M2-M5 giant graviton expansions
• ADHM Wilson line defect indices
• Hawking-Page transition on a spin chain