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OPE = QNM
Paolo Arnaudo, Cristoforo Iossa, Robin Karlsson +1
At microscopic scales the linear response of thermal states of large- CFTs is governed by a thermal operator product expansion (OPE), while at large scales response is governed…
5-Dimensional Gravitational Raman Scattering: Scalar Wave Perturbations in Schwarzschild-Tangherlini Spacetime
Samim Akhtar, Yilber Fabian Bautista, Cristoforo Iossa +1
In this Letter, we study scalar wave perturbations of arbitrary frequency to the 5D Schwarzschild-Tangherlini black hole (STBH) within general relativity. For the first time, we de…
Bouncing off a stringy singularity
Matthew Dodelson, Cristoforo Iossa, Robin Karlsson
A sharp signature of the black hole singularity in holography is a divergence in the boundary thermal two-point function at a specific point in the complex time plane. This diverge…
Large charge meets semiclassics in super Yang-Mills
Augustus Brown, Francesco Galvagno, Alba Grassi +2
We study the large-charge sector of super Yang-Mills theory (SYM) with gauge group by constructing a special class of half-BPS heavy operators, termed "cano…
Matrix models for extremal and integrated correlators of higher rank
Alba Grassi, Cristoforo Iossa
We study extremal and integrated correlators of half-BPS operators in four-dimensional SQCD and SYM with gauge group. We focus on the large…
Black Hole Perturbation Theory Meets CFT: Kerr Compton Amplitudes from Nekrasov-Shatashvili Functions
Yilber Fabian Bautista, Giulio Bonelli, Cristoforo Iossa +2
We present a novel study of Kerr Compton amplitudes in a partial wave basis in terms of the Nekrasov-Shatashvili (NS) function of the confluent Heun equation (CHE). Remarkably, NS-…