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We construct 3-dimensional once-Extended Topological Quantum Field Theories (ETQFTs for short) out of (possibly non-semisimple) modular categories, and we explicitly identify linear categories and functors in their image. The circle…

Geometric Topology · Mathematics 2022-09-20 Marco De Renzi

We show that unrolled quantum groups at odd roots of unity give rise to relative modular categories. These are the main building blocks for the construction of 1+1+1-TQFTs extending CGP invariants, which are non-semisimple quantum…

Geometric Topology · Mathematics 2021-01-06 Marco De Renzi , Nathan Geer , Bertrand Patureau-Mirand

This survey covers some of the results contained in the papers by Costantino, Geer and Patureau (https://arxiv.org/abs/1202.3553) and by Blanchet, Costantino, Geer and Patureau (https://arxiv.org/abs/1404.7289). In the first one the authors…

Geometric Topology · Mathematics 2017-03-22 Marco De Renzi

The goal of this work is to describe a categorical formalism for (Extended) Topological Quantum Field Theories (TQFTs) and present them as functors from a suitable category of cobordisms with corners to a linear category, generalizing 2d…

Quantum Algebra · Mathematics 2011-08-29 Mark Feshbach , Alexander A. Voronov

Invariants of 3-manifolds from a non semi-simple category of modules over a version of quantum $sl(2)$ were obtained by the last three authors in arXiv:1202.3553 . They are invariants of $3$-manifolds together with a cohomology class which…

Geometric Topology · Mathematics 2016-05-27 Christian Blanchet , Francesco Costantino , Nathan Geer , Bertrand Patureau-Mirand

We use modified traces to renormalize Lyubashenko's closed 3-manifold invariants coming from twist non-degenerate finite unimodular ribbon categories. Our construction produces new topological invariants which we upgrade to 2+1-TQFTs under…

Geometric Topology · Mathematics 2022-09-20 Marco De Renzi , Azat M. Gainutdinov , Nathan Geer , Bertrand Patureau-Mirand , Ingo Runkel

Vladimir Turaev discovered in the early years of quantum topology that the notion of modular category was an appropriate structure for building 3-dimensional Topological Quantum Field Theories (TQFTs for short) containing invariants of…

Geometric Topology · Mathematics 2022-09-20 Christian Blanchet , Marco De Renzi

This is an invited contribution to the 2nd edition of the Encyclopedia of Mathematical Physics. We give an overview of 3-dimensional topological quantum field theories (TQFTs) and the corresponding quantum invariants of 3-manifolds. We…

Geometric Topology · Mathematics 2024-01-22 Kursat Sozer , Alexis Virelizier

We define a (3+1)-TQFT associated with possibly non-semisimple finite unimodular ribbon tensor categories using skein theory. This gives an explicit realization of a TQFT predicted by the cobordism hypothesis, based on recent results on…

Geometric Topology · Mathematics 2026-04-15 Francesco Costantino , Nathan Geer , Benjamin Haïoun , Bertrand Patureau Mirand

We construct a Topological Quantum Field Theory (in the sense of Atiyah) associated to the universal finite-type invariant of 3-dimensional manifolds, as a functor from the category of 3-dimensional manifolds with parametrized boundary,…

Geometric Topology · Mathematics 2008-11-26 Dorin Cheptea , Thang T Q Le

In [arXiv:1912.02063], we constructed 3-dimensional Topological Quantum Field Theories (TQFTs) using not necessarily semisimple modular categories. Here, we study projective representations of mapping class groups of surfaces defined by…

Geometric Topology · Mathematics 2022-09-20 Marco De Renzi , Azat M. Gainutdinov , Nathan Geer , Bertrand Patureau-Mirand , Ingo Runkel

We introduce an unrolled quantization $U_q^E(\mathfrak{gl}(1 \vert 1))$ of the complex Lie superalgebra $\mathfrak{gl}(1 \vert 1)$ and use its categories of weight modules to construct and study new three dimensional non-semisimple…

Quantum Algebra · Mathematics 2022-12-09 Nathan Geer , Matthew B. Young

We introduce regular stratified piecewise linear manifolds to describe lattices and investigate the lattice model approach to topological quantum field theory in all dimensions. We introduce the unitary $n+1$ alterfold TQFT and construct it…

Mathematical Physics · Physics 2024-09-26 Zhengwei Liu

We construct two-dimensional non-commutative topological quantum field theories (TQFTs), one for each Hecke algebra corresponding to a finite Coxeter system. These TQFTs associate an invariant to each ciliated surface, which is a Laurent…

Quantum Algebra · Mathematics 2021-12-20 Vladimir Fock , Valdo Tatitscheff , Alexander Thomas

A 3-dimensional topological quantum field theory (TQFT) is a symmetric monoidal functor from the category of 3-cobordisms to the category of vector spaces. Such TQFTs provide in particular numerical invariants of closed 3-manifolds such as…

Geometric Topology · Mathematics 2023-08-25 Mickael Lallouche

We construct a family of 3d quantum field theories $\mathcal T_{n,k}^A$ that conjecturally provide a physical realization -- and derived generalization -- of non-semisimple mathematical TQFT's based on the modules for the quantum group…

High Energy Physics - Theory · Physics 2021-12-06 Thomas Creutzig , Tudor Dimofte , Niklas Garner , Nathan Geer

We construct a state-sum type invariant of smooth closed oriented $4$-manifolds out of a $G$-crossed braided spherical fusion category ($G$-BSFC) for $G$ a finite group. The construction can be extended to obtain a $(3+1)$-dimensional…

Quantum Algebra · Mathematics 2019-11-05 Shawn X. Cui

In this paper, we present a construction toward a new type of TQFTs at the crossroads of low-dimensional topology, algebraic geometry, physics, and homotopy theory. It assigns TMF-modules to closed 3-manifolds and maps of TMF-modules to…

Algebraic Topology · Mathematics 2025-09-17 Sergei Gukov , Vyacheslav Krushkal , Lennart Meier , Du Pei

We study a special sort of 2-dimensional extended Topological Quantum Field Theories (TQFTs) which we call open-closed TQFTs. These are defined on open-closed cobordisms by which we mean smooth compact oriented 2-manifolds with corners that…

Algebraic Topology · Mathematics 2008-02-22 Aaron D. Lauda , Hendryk Pfeiffer

We construct and study a new family of TQFTs based on nilpotent highest weight representations of quantum sl(2) at a root of unity indexed by generic complex numbers. This extends to cobordisms the non-semi-simple invariants defined in…

Geometric Topology · Mathematics 2014-04-30 Christian Blanchet , Francesco Costantino , Nathan Geer , Bertrand Patureau-Mirand
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