Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/179274
 Title: On the UV completion of the $O(N)$ model in $6-\epsilon$ dimensions: a stable large-charge sector Author: Arias Tamargo, G.Rodríguez Gómez, DiegoRusso, J. G. (Jorge Guillermo) Keywords: Simetria (Física)Teoria quàntica de campsSymmetry (Physics)Quantum field theory Issue Date: 8-Sep-2020 Publisher: Springer Verlag Abstract: We study large charge sectors in the O(N) model in 6 − ϵ dimensions. For 4 < d < 6, in perturbation theory, the quartic O(N) theory has a UV stable fixed point at large N . It was recently argued that this fixed point can be described in terms of an IR fixed point of a cubic O(N) model. By considering a double scaling limit of large charge and weak couplings, we compute two-point and all "extremal" higher-point correlation functions for large charge operators and find a precise equivalence between both pictures. Instanton instabilities are found to be exponentially suppressed at large charge. We also consider correlation function of U(1)-invariant meson operators in the O(2N) ⊃ U(1) × SU(N) theory, as a first step towards tests of (higher spin) AdS/CFT. Note: Reproducció del document publicat a: https://doi.org/10.1007/JHEP09(2020)064 It is part of: Journal of High Energy Physics, 2020, vol. 9, num. 64 URI: http://hdl.handle.net/2445/179274 Related resource: https://doi.org/10.1007/JHEP09(2020)064 ISSN: 1126-6708 Appears in Collections: Articles publicats en revistes (Física Quàntica i Astrofísica)

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