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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

A TQFT is a functor from a cobordism category to the category of vector spaces, satisfying certain properties. An important property is that the vector spaces should be finite dimensional. For the WRT TQFT, the relevant 2+1-cobordism…

Geometric Topology · Mathematics 2015-10-23 Patrick M. Gilmer , Xuanye Wang

Let $\text{X}$ denote a projective variety over an algebraically closed field on which a linear algebraic group acts with finitely many orbits. Then, a conjecture of Soergel and Lunts in the setting of Koszul duality and Langlands'…

Algebraic Geometry · Mathematics 2020-03-24 Roy Joshua

We construct a new class of three-dimensional topological quantum field theories (3d TQFTs) by considering generalized Argyres-Douglas theories on $S^1 \times M_3$ with a non-trivial holonomy of a discrete global symmetry along the $S^1$.…

High Energy Physics - Theory · Physics 2018-09-14 Mykola Dedushenko , Sergei Gukov , Hiraku Nakajima , Du Pei , Ke Ye

For each braided category $\mathcal{C}$ we show that, under mild hypotheses, there is an associated category of "half braided algebras" and their bimodules internal to $\mathcal{C}$ which is not only monoidal but even braided and balanced.…

Quantum Algebra · Mathematics 2026-03-06 Francesco Costantino , Matthieu Faitg

We develop the general theory for the construction of Extended Topological Quantum Field Theories (ETQFTs) associated with the Costantino-Geer-Patureau quantum invariants of closed 3-manifolds. In order to do so, we introduce relative…

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

We endow a non-semisimple category of modules of unrolled quantum sl(2) with a Hermitian structure. We also prove that the TQFT constructed in arXiv:1202.3553 using this category is Hermitian. This gives rise to projective representations…

Quantum Algebra · Mathematics 2022-08-03 Nathan Geer , Aaron D. Lauda , Bertrand Patureau-Mirand , Joshua Sussan

In the late 1980s Witten used the Chern-Simons form of a connection to construct new invariants of 3-manifolds and knots, recovering in particular the Jones invariants. Since then the associated topological quantum field theory (TQFT) has…

Algebraic Topology · Mathematics 2008-10-28 Daniel S. Freed

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

In this paper, we establish the general theory of (2+1)-dimensional topological quantum field theory (in short, TQFT) with a Verlinde basis. It is a consequence that we have a Dehn surgery formula for 3-manifold invariants for this kind of…

Operator Algebras · Mathematics 2007-05-23 Yasuyuki Kawahigashi , Nobuya Sato , Michihisa Wakui

A large class of symmetries of topological quantum field theories is naturally described by functors into higher categories of topological defects. Here we study 2-group symmetries of 3-dimensional TQFTs. We explain that these symmetries…

Quantum Algebra · Mathematics 2026-05-20 Nils Carqueville , Benjamin Haake

A faithful $(1+1)$ TQFT has recently been constructed, but the existence of a faithful $(2+1)$ TQFT remains an open question, that subsumes the hard problem of linearity of mapping class groups of surfaces. To circumvent the latter problem…

Geometric Topology · Mathematics 2025-05-28 Dušan Đorđević , Danica Kosanović , Jovana Nikolić , Zoran Petrić

We show that there exist infinitely many pairs of non-homeomorphic closed oriented SOL torus bundles with the same quantum (TQFT) invariants. This follows from the arithmetic behind the conjugacy problem in $SL(2,\Z)$ and its congruence…

Geometric Topology · Mathematics 2014-11-11 Louis Funar

This paper contains three related groupings of results. First, we consider a new notion of an admissible skein module of a surface associated to an ideal in a (non-semisimple) pivotal category. Second, we introduce the notion of a chromatic…

Quantum Algebra · Mathematics 2024-04-18 Francesco Costantino , Nathan Geer , Bertrand Patureau-Mirand , Alexis Virelizier

In this paper we study the Real Gromov-Witten theory of local 3-folds over Real curves. We show that this gives rise to a 2-dimensional Klein TQFT defined on an extension of the category of unorientable surfaces. We use this structure to…

Symplectic Geometry · Mathematics 2021-10-26 Penka Georgieva , Eleny-Nicoleta Ionel

We lay down a general framework for how to construct a Topological Quantum Field Theory $Z_A$ defined on shaped triangulations of orientable 3-manifolds from any Pontryagin self-dual locally compact abelian group $A$. The partition function…

Quantum Algebra · Mathematics 2014-09-04 Jørgen Ellegaard Andersen , Rinat Kashaev

We define a symmetric tensor enhancement $\mathrm{E}\mathbb{F}$ with full duals of the 3-category $\mathbb{F}$ of fusion categories in which every Reshetikhin--Turaev theory has a fully local realization. Our $\mathrm{E}\mathbb{F}$ is a…

Quantum Algebra · Mathematics 2026-01-12 Daniel S. Freed , Claudia I. Scheimbauer , Constantin Teleman

In this paper, we describe a relation between a categorical quantization construction, called "2-linearization", and extended topological quantum field theory (ETQFT). We then describe an extension of the 2-linearization process which…

Quantum Algebra · Mathematics 2013-07-18 Jeffrey C. Morton

We formulate a family of spin Topological Quantum Filed Theories (spin-TQFTs) as fermionic generalization of bosonic Dijkgraaf-Witten TQFTs. They are obtained by gauging $G$-equivariant invertible spin-TQFTs, or, in physics language,…

High Energy Physics - Theory · Physics 2020-06-01 Meng Guo , Kantaro Ohmori , Pavel Putrov , Zheyan Wan , Juven Wang

To understand what does Chern-Simons with compact Lie group(does not like Dijkgraaf-Witten model with finite group in 3d) attach to a point, we first give a construction of Topological Quantum Field Theory(TQFT) via Chern-Simons theory in…

Mathematical Physics · Physics 2011-12-05 Yifan Zhang , Ke Wu