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The Schwarzian from gauge theories

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arXiv:2404.01540v2 Announce Type: replace
Abstract: The continuum of holographic dual gravitational charges is recovered out of the discrete spectrum of $U(N)$ $\mathcal{N}=4$ SYM on $\mathbb{R}\times S^3\,$. In such a limit, the free energy of the free gauge theory is computed up to logarithmic contributions and exponentially suppressed contributions. Assuming the supergravity dual prediction to correctly capture strong-coupling results in field theory, the answer is bound to encode a complete low-temperature expansion of the Gibbons-Hawking gravitational on-shell action, valid well beyond the vicinity of supersymmetric black hole solutions. The formula recovers the long awaited Schwarzian contribution at low enough temperatures. The computed mass-gap matches the conjectured strong-coupling result obtained by Boruch, Heydeman, Iliesiu and Turiaci in supergravity. The emergent reparameterizations, broken by the Schwarzian, correspond to redefinitions of the relevant cutoff scale. Observations are made regarding the existence of $\frac{1}{8}$-BPS black holes and how this is in tension with BPS inequalities. The RG-flow procedure leading to these results opens the way to understanding the emergence of chaos in gauge theories and its relation to non-extremal and non-supersymmetric black hole physics.

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