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Related papers: Topological Field Theory with Haagerup Symmetry

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We construct the defining data of two-dimensional topological field theories (TFTs) enriched by non-invertible symmetries/topological defect lines. Simple formulae for the three-point functions and the lasso two-point functions are derived,…

High Energy Physics - Theory · Physics 2022-01-05 Tzu-Chen Huang , Ying-Hsuan Lin , Sahand Seifnashri

Topological defect lines (TDLs) are extended line operators which act on the Hilbert space of two-dimensional CFTs and satisfy non-trivial fusion algebras when forming junctions. Among the most interesting fusion algebras are the so-called…

High Energy Physics - Theory · Physics 2025-05-20 Babak Haghighat , Youran Sun

We show that the symmetry topological field theory (SymTFT) construction, also known as the topological holography, provides a natural and intuitive framework for the entropic order parameter characterising phases with (partially) broken…

High Energy Physics - Theory · Physics 2026-01-01 Hua-Chen Zhang , Germán Sierra , Javier Molina-Vilaplana

Symmetries and anomalies of a $d$-dimensional quantum field theory are often encoded in a $(d+1)$-dimensional topological action, called symmetry topological field theory (TFT). We derive the symmetry TFT for the 2-form and 1-form…

High Energy Physics - Theory · Physics 2022-11-30 Fabio Apruzzi

(2+1) dimensional topological quantum field theories with defect excitations are by now quite well understood, while many questions are still open for (3+1) dimensional TQFTs. Here we propose a strategy to lift states and operators of a…

High Energy Physics - Theory · Physics 2017-07-27 Clement Delcamp , Bianca Dittrich

Two-dimensional conformal field theory (CFT) can be defined through its correlation functions. These must satisfy certain consistency conditions which arise from the cutting of world sheets along circles or intervals. The construction of a…

Category Theory · Mathematics 2008-11-26 Ingo Runkel , Jens Fjelstad , Jurgen Fuchs , Christoph Schweigert

We consider topological defect lines (TDLs) in two-dimensional conformal field theories. Generalizing and encompassing both global symmetries and Verlinde lines, TDLs together with their attached defect operators provide models of fusion…

High Energy Physics - Theory · Physics 2019-01-30 Chi-Ming Chang , Ying-Hsuan Lin , Shu-Heng Shao , Yifan Wang , Xi Yin

We introduce a many-body topological invariant, called the topological disorder parameter (TDP), to characterize gapped quantum phases with global internal symmetry in (2+1)d. TDP is defined as the constant correction that appears in the…

Strongly Correlated Electrons · Physics 2022-09-15 Bin-Bin Chen , Hong-Hao Tu , Zi Yang Meng , Meng Cheng

We find an intriguing relation between a class of 3-dimensional non-unitary topological field theories (TFTs) and Virasoro minimal models $M(2,2r+3)$ with $r \geq 1$. The TFTs are constructed by topologically twisting $3d$ ${\mathcal N}=4$…

High Energy Physics - Theory · Physics 2023-10-16 Dongmin Gang , Heeyeon Kim , Spencer Stubbs

We construct a (1+1)d gapless theory which has Haagerup $\mathcal{H}_3$ symmetry. The construction relies on the recent exploration of the categorical Landau paradigm applied to fusion category symmetries. First, using the Symmetry…

High Energy Physics - Theory · Physics 2025-06-16 Lea E. Bottini , Sakura Schafer-Nameki

We propose a (1+1)D lattice model, inspired by a weak Hopf algebra generalization of the cluster state model, which realizes Haagerup fusion category symmetry and features a tensor product Hilbert space. The construction begins with a…

Quantum Algebra · Mathematics 2025-10-31 Zhian Jia

We use the formalism of strange correlators to construct a critical classical lattice model in two dimensions with the \emph{Haagerup fusion category} $\mathcal{H}_3$ as input data. We present compelling numerical evidence in the form of…

We study generalized discrete symmetries of quantum field theories in 1+1D generated by topological defect lines with no inverse. In particular, we describe 't Hooft anomalies and classify gapped phases stabilized by these symmetries,…

High Energy Physics - Theory · Physics 2019-12-06 Ryan Thorngren , Yifan Wang

We study the anomalies of non-invertible symmetries in 1+1D QFTs using gapped boundaries of its SymTFT. We establish the explicit relation between Lagrangian algebras which determine gapped boundaries of the SymTFT, and algebras which…

High Energy Physics - Theory · Physics 2024-05-09 Pavel Putrov , Rajath Radhakrishnan

We determine the $d+1$ dimensional topological field theory, which encodes the higher-form symmetries and their 't Hooft anomalies for $d$-dimensional QFTs obtained by compactifying M-theory on a non-compact space $X$. The resulting theory,…

High Energy Physics - Theory · Physics 2023-08-02 Fabio Apruzzi , Federico Bonetti , Iñaki García Etxebarria , Saghar S. Hosseini , Sakura Schafer-Nameki

This note is intended as an introduction to the functorial formulation of quantum field theories with defects. After some remarks about models in general dimension, we restrict ourselves to two dimensions - the lowest dimension in which…

Quantum Algebra · Mathematics 2011-07-05 Alexei Davydov , Liang Kong , Ingo Runkel

We propose a general framework to characterize gapped infra-red (IR) phases of theories with non-invertible (or categorical) symmetries. In this paper we focus on (1+1)d gapped phases with fusion category symmetries. The approach that we…

High Energy Physics - Theory · Physics 2025-01-29 Lakshya Bhardwaj , Lea E. Bottini , Daniel Pajer , Sakura Schafer-Nameki

Topological defect lines (TDLs) in two-dimensional conformal field theories (CFTs) are standard examples of generalized symmetries in quantum field theory. Integrable lattice incarnations of these TDLs, such as those provided by…

High Energy Physics - Theory · Physics 2024-08-16 Thiago Silva Tavares , Madhav Sinha , Linnea Grans-Samuelsson , Ananda Roy , Hubert Saleur

We extend the TFT construction of CFT correlators of [arXiv:hep-th/0204148] to so-called finite logarithmic CFTs for which the algebraic input data is no longer semisimple but still finite. More specifically, starting from the data of a…

Quantum Algebra · Mathematics 2025-12-03 Aaron Hofer , Ingo Runkel

Topological holography is a holographic principle that describes the generalized global symmetry of a local quantum system in terms of a topological order in one higher dimension. This framework separates the topological data from the local…

Strongly Correlated Electrons · Physics 2025-07-02 Sheng-Jie Huang , Meng Cheng
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