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Exploring the ground state spectrum of gamma-deformed N=4 SYM
Univ Paris, Lab Phys, ENS, Univ PSL,CNRS,Sorbonne Univ, F-75005 Paris, France.;Univ Paris Saclay, CNRS, CEA, Inst Phys Theor, F-91191 Gif Sur Yvette, France.;Inst Informat Transmiss Problems, Moscow 127994, Russia..
NORDITA, SU;Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.;Kings Coll London, Dept Math, London WC2R 2LS, England..
2022 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, Vol. 2022, no 6, article id 146Article in journal (Refereed) Published
Abstract [en]

We study the γ-deformation of the planar N = 4 super Yang-Mills theory which breaks all supersymmetries but is expected to preserve integrability of the model. We focus on the operator Tr (ϕ1ϕ1) built from two scalars, whose integrability description has been questioned before due to contributions from double-trace counterterms. We show that despite these subtle effects, the integrability-based Quantum Spectral Curve (QSC) framework works perfectly for this state and in particular reproduces the known 1-loop prediction. This resolves an earlier controversy concerning this operator and provides further evidence that the γ-deformed model is an integrable CFT at least in the planar limit. We use the QSC to compute the first 5 weak coupling orders of the anomalous dimension analytically, matching known results in the fishnet limit, and also compute it numerically all the way from weak to strong coupling. We also utilize this data to extract a new coefficient of the beta function of the double-trace operator couplings. 

Place, publisher, year, edition, pages
Springer Nature , 2022. Vol. 2022, no 6, article id 146
Keywords [en]
AdS-CFT Correspondence, Integrable Field Theories
National Category
Subatomic Physics Mathematical Analysis
Identifiers
URN: urn:nbn:se:kth:diva-315718DOI: 10.1007/JHEP06(2022)146ISI: 000819004900007Scopus ID: 2-s2.0-85133014384OAI: oai:DiVA.org:kth-315718DiVA, id: diva2:1683658
Note

QC 20220718

Available from: 2022-07-18 Created: 2022-07-18 Last updated: 2023-09-25Bibliographically approved

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