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arXiv · 2409.06781

NLO in the large charge sector of the critical $O(N)$ model at large $N$

Nicola Andrea Dondi·Giacomo Sberveglieri
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Abstract

We compute the next-to-leading correction to the scaling dimension of large-charge operators in the $3d$ critical $O(N)$ model in a double scaling limit in which both $N$ and the operator charge $Q$ are taken to be large. When $Q \gg N$ our result matches predictions from the conformal superfluid EFT and allows to extract next-to-leading order corrections to the EFT Wilsonian coefficients. At present, our result represents the most precise determination of large-charge operator scaling dimension in weakly-coupled CFTs.

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Nicola Andrea Dondi, Giacomo Sberveglieri. 2024-09-10. NLO in the large charge sector of the critical $O(N)$ model at large $N$. https://arxiv.org/abs/2409.06781

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