TY  - JOUR
AU  - Fabri, Matheus
AU  - Sfondrini, Alessandro
AU  - Skrzypek, Torben
TI  - Perturbed symmetric-product orbifold: first-order mixing and puzzles for integrability
JO  - Journal of physics / A
VL  - 59
IS  - 1
SN  - 1751-8113
CY  - Bristol
PB  - IOP Publ.
M1  - PUBDB-2026-00956
M1  - arXiv:2504.13091
M1  - DESY-25-064
SP  - 015201
PY  - 2026
N1  - ISSN 1751-8121 not unique: **3 hits**.42 pages, 1 attached Wolfram Mathematica notebook; v2: expanded discussion of Gaberdiel-Gopakumar-Nairz; v3: as published
AB  - We study the marginal deformation of the symmetric-product orbifold theory Sym<sub>N</sub>(T<sup>4</sup>) which corresponds to introducing a small amount of Ramond–Ramond flux into the dual AdS<sub>3</sub>×S<sup>3</sup>×T<sup>4</sup> background. Already at first order in perturbation theory, the dimension of certain single-cycle operators is corrected, indicating that wrapping corrections from integrability must come into play earlier than expected. Our results provide a test for integrability computations from the mirror thermodynamic Bethe ansatz or Quantum Spectral Curve, akin to the computation of the Konishi anomalous dimension in \mathscrN = 4 supersymmetric Yang–Mills theory. We also discuss a flaw in the original derivation of the integrable structure of the perturbed orbifold. Together, these observations suggest that more needs to be done to correctly identify and exploit the integrable structure of the perturbed orbifold CFT.
KW  - AdS/CFT (autogen)
KW  - integrable models (autogen)
KW  - conformal perturbation theory (autogen)
KW  - CFT2 (autogen)
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1088/1751-8121/ae2e5f
UR  - https://bib-pubdb1.desy.de/record/646757
ER  -