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Higher-form anomalies and state-operator correspondence beyond conformal invariance, by Stathis Vitouladitis

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Stathis Vitouladitis (ULB/Solvay Institutes) proves a state-operator correspondence in non-conformal quantum field theories with higher-form symmetries, extending a key tool beyond conformal invariance for the first time. The work shows such systems naturally emerge as relativistic superfluids, with their symmetry structure generating an infinite set of conserved charges organized into a higher-dimensional abelian current algebra with central extensions. These charges generalize Kac–Moody algebras, providing a framework where states and operators map directly via representations of the algebra, demonstrated through Euclidean path integrals on d-dimensional balls. Free-theory examples confirm the correspondence by matching local operator insertions to energy eigenstates on S^(d-1), validating the approach via canonical quantization methods. Without conformal symmetry, the empty path integral yields a squeezed vacuum—not the true ground state—revealing novel quantum vacuum behavior in non-conformal higher-form systems.
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SciPost Physics Home Authoring Refereeing Submit a manuscript About Higher-form anomalies and state-operator correspondence beyond conformal invariance Stathis Vitouladitis SciPost Phys. 20, 011 (2026) · published 19 January 2026 doi: 10.21468/SciPostPhys.20.1.011 pdf BiBTeX RIS Submissions/Reports Abstract We establish a state-operator correspondence for a class of non-conformal quantum field theories with continuous higher-form symmetries and a mixed anomaly. Such systems can always be realised as a relativistic superfluid. The symmetry structure induces an infinite tower of conserved charges, which we construct explicitly. These charges satisfy an abelian current algebra with a central extension, generalising the familiar Kac–Moody algebras to higher dimensions. States and operators are organised into representations of this algebra, enabling a direct correspondence. We demonstrate the correspondence explicitly in free examples by performing the Euclidean path integral on a $d$-dimensional ball, with local operators inserted in the origin, and matching to energy eigenstates on $S^{d-1}$ obtained by canonical quantisation. Interestingly, in the absence of conformal invariance, the empty path integral prepares a squeezed vacuum rather than the true ground state. × TY - JOURPB - SciPost FoundationDO - 10.21468/SciPostPhys.20.1.011TI - Higher-form anomalies and state-operator correspondence beyond conformal invariancePY - 2026/01/19UR - https://scipost.org/SciPostPhys.20.1.011JF - SciPost PhysicsJA - SciPost Phys.VL - 20IS - 1SP - 011A1 - Vitouladitis, StathisAB - We establish a state-operator correspondence for a class of non-conformal quantum field theories with continuous higher-form symmetries and a mixed anomaly. Such systems can always be realised as a relativistic superfluid. The symmetry structure induces an infinite tower of conserved charges, which we construct explicitly. These charges satisfy an abelian current algebra with a central extension, generalising the familiar Kac–Moody algebras to higher dimensions. States and operators are organised into representations of this algebra, enabling a direct correspondence. We demonstrate the correspondence explicitly in free examples by performing the Euclidean path integral on a $d$-dimensional ball, with local operators inserted in the origin, and matching to energy eigenstates on $S^{d-1}$ obtained by canonical quantisation. Interestingly, in the absence of conformal invariance, the empty path integral prepares a squeezed vacuum rather than the true ground state.ER - × @Article{10.21468/SciPostPhys.20.1.011, title={{Higher-form anomalies and state-operator correspondence beyond conformal invariance}}, author={Stathis Vitouladitis}, journal={SciPost Phys.}, volume={20}, pages={011}, year={2026}, publisher={SciPost}, doi={10.21468/SciPostPhys.20.1.011}, url={https://scipost.org/10.21468/SciPostPhys.20.1.011},} Ontology / Topics See full Ontology or Topics database. 't Hooft anomalies Abelian symmetries Conserved charges Global symmetries Quantum field theory (QFT) Superfluidity Author / Affiliations: mappings to Contributors and Organizations See all Organizations. 1 2 Stathis Vitouladitis 1 Université Libre de Bruxelles [ULB] 2 International Solvay Institutes Funders for the research work leading to this publication Fonds De La Recherche Scientifique - FNRS (FNRS) (through Organization: Fonds National de la Recherche Scientifique [FNRS]) Solvay

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