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arXiv · 2503.21867

Conformal Collider Physics at Large Charge

Gabriel Cuomo·Eren Firat·Filippo Nardi·Lorenzo Ricci
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Abstract

We study energy correlators and other event shapes in states created by operators with large global $U(1)$ charge $Q$ in Conformal Field Theories. Focusing on theories whose large charge sector is described by the superfluid Effective Field Theory (EFT), we develop a systematic framework to compute event shapes within the EFT. As formerly observed, event shapes at leading order in $1/Q$ factorize into a product of classical expectation values determined by symmetry. In contrast, the subleading contribution to energy-energy and charge-charge correlators is a nontrivial prediction of the EFT, which we compute explicitly. Our results reveal a sharp collinear enhancement of the correlation between detectors, induced by the propagation of sound. We also generalize our findings to a broad class of event shapes.

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Gabriel Cuomo, Eren Firat, Filippo Nardi, Lorenzo Ricci. 2025-03-27. Conformal Collider Physics at Large Charge. https://arxiv.org/abs/2503.21867

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