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Central Hopf Monads and Braided Commutative Algebras 中心霍普夫单元与编织交换代数
Pub Date : 2024-09-03 DOI: arxiv-2409.01918
Noelia Bortolussi, Adriana Mejía Castaño, Martín Mombelli
Let $ V$ be a braided tensor category and $ C$ a tensor category equippedwith a braided tensor functor $G:Vto Z(C)$. For any exact indecomposable$C$-module category $M$, we explicitly construct a right adjoint of the actionfunctor $rho:Z^V(C)to C^*_{M}$ afforded by $M$. Here $Z^V(C)$ is theM"uger's centralizer of the subcategory $G(V)$ inside the center $Z^V(C)$,also known as the relative center. The construction is parallel to the onepresented by K. Shimizu, but using instead the relative coend end. Thisadjunction turns out to be monadic, thus inducing Hopf monads $T_{V}: Cto C$,such that there is a monoidal equivalence of categories $ C_{T_{V}}simeqZ^V(C).$ If $bar{rho}: C^*_{ M}to Z^V(C)$ is the right adjoint of $rho,$then $bar{rho}(Id_{M})$ is the braided commutative algebra constructed in [R.Laugwitz and C. Walton. Braided commutative algebras over quantized envelopingalgebras, Transform. Groups 26(3) (2021), 957--993]. As a consequence of ourconstruction of these algebras, in terms of the right adjoint to $rho$, we canprovide a recipe to compute them when $C=Rep(H# T)$ is the category offinite-dimensional representations of a finite-dimensional Hopf algebra $H# T$obtained by bosonization, and choosing an arbitrary $Rep(H# T)$-modulecategory $M$. We show an explicit example in the case of Taft algebras.
让 $ V$ 是一个编织张量范畴,而 $ C$ 是一个张量范畴,它配备了一个编织张量函子 $G:Vto Z(C)$。对于任何精确的不可分解$C$模组范畴$M$,我们明确地构造了一个由$M$提供的$rho:Z^V(C)到C^*_{M}$的右矢量。这里$Z^V(C)$是中心$Z^V(C)$内的子类$G(V)$的M/"uger's centralizer,也称为相对中心。这个构造与清水克(K. Shimizu)提出的构造平行,但使用的是相对共端。这个结原来是单元的,因此诱导出霍普夫单元 $T_{V}:这样就有了一个单义等价范畴 $ C_{T_{V}}simeqZ^V(C):C^*_{ M}to Z^V(C)$ 是 $rho 的右邻接,那么 $bar{rho}(Id_{M})$ 就是[R.Laugwitz 和 C. Walton.Braided commutative algebras over quantized envelopingalgebras, Transform.Groups 26(3) (2021), 957--993].作为我们用$rho$的右邻接构建这些代数的结果,当$C=Rep(H# T)$是通过玻色化得到的有限维霍普夫代数$H# T$的无穷维表示范畴,并选择一个任意的$Rep(H# T)$模块范畴$M$时,我们可以提供一个计算它们的秘诀。我们以塔夫脱代数为例,展示了一个明确的例子。
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引用次数: 0
Plethysm Stability of Schur's $Q$-functions 舒尔 Q$ 函数的 Plethysm 稳定性
Pub Date : 2024-09-02 DOI: arxiv-2409.01479
John Graf, Naihuan Jing
Schur functions have been shown to satisfy certain stability properties andrecurrence relations. In this paper, we prove analogs of these properties withSchur's $Q$-functions using vertex operator methods.
舒尔函数已被证明满足某些稳定性和递推关系。在本文中,我们用顶点算子方法证明了舒尔 Q$ 函数的这些类似性质。
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引用次数: 0
Generalised 6j symbols over the category of $G$-graded vector spaces $G$等级向量空间类别上的广义6j符号
Pub Date : 2024-08-31 DOI: arxiv-2409.09055
Fabio Lischka
Any choice of a spherical fusion category defines an invariant of orientedclosed 3-manifolds, which is computed by choosing a triangulation of themanifold and considering a state sum model that assigns a 6j symbol to everytetrahedron in this triangulation. This approach has been generalized tooriented closed 3-manifolds with defect data by Meusburger. In a recent paper,she constructed a family of invariants for such manifolds parametrised by thechoice of certain spherical fusion categories, bimodule categories, finitebimodule functors and module natural transformations. Meusburger definedgeneralised 6j symbols for these objects, and introduces a state sum model thatassigns a generalised 6j symbol to every tetrahedron in the triangulation of amanifold with defect data, where the type of 6j symbol used depends on whatdefect data occur within the tetrahedron. The present work provides non-trivialexamples of suitable bimodule categories, bimodule functors and module naturaltransformation, all over categories of $G$-graded vector spaces. Our mainresult is the description of module functors in terms of matrices, which allowsus to classify these functors when $G$ is a finite cyclic group. Furthermore,we calculate the generalised 6j symbols for categories of $G$-graded vectorspaces, (bi-)module categories over such categories and (bi-)module functors.
球形融合范畴的任何选择都定义了定向封闭 3-manifolds 的不变量,其计算方法是选择它们的一个三角剖分,并考虑一个状态和模型,为该三角剖分中的每个四面体分配一个 6j 符号。Meusburger 已将这一方法推广到具有缺陷数据的定向封闭 3-manifold。在最近的一篇论文中,她为这类流形构建了一个不变量族,其参数是对某些球形融合范畴、双模子范畴、有限双模子函数和模子自然变换的选择。Meusburger 为这些对象定义了广义 6j 符号,并引入了一个状态和模型,为具有缺陷数据的流形三角剖分中的每个四面体分配一个广义 6j 符号,其中使用的 6j 符号类型取决于四面体中出现的缺陷数据。本研究提供了合适的双模范畴、双模函子和模子自然变换的非难例,它们都在 $G$ 梯度向量空间的范畴之上。我们的主要成果是用矩阵描述模块函子,这使我们能在 $G$ 是有限循环群时对这些函子进行分类。此外,我们还计算了 $G$ 梯度向量空间类别、这些类别上的(双)模类别和(双)模函数的广义 6j 符号。
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引用次数: 0
Miraculous cancellations and the quantum Frobenius for $SL_3$ skein modules SL_3$绺裂模块的神奇抵消和量子弗罗本尼斯
Pub Date : 2024-08-31 DOI: arxiv-2409.00351
Vijay Higgins
We construct a quantum Frobenius map for the $SL_3$ skein module of anyoriented 3-manifold specialized at a root of unity, and describe the map by wayof threading certain polynomials along links. The homomorphism is a higher rankversion of the Chebyshev-Frobenius homomorphism of Bonahon-Wong. The strategybuilds on a previous construction of the Frobenius map for $SL_3$ skeinalgebras of punctured surfaces, using the Frobenius map of Parshall-Wang forthe quantum group $mathcal{O}_q(SL_3).$
我们构建了一个量子弗罗本尼乌斯图,用于任何取向 3-manifold的$SL_3$绺模块,该模块专一于一个统一根,并通过沿链接穿入某些多项式来描述该图。该同态是 Bonahon-Wong 的 Chebyshev-Frobenius 同态的高阶版本。该策略建立在先前对穿刺面的 $SL_3$ skeinalgebras 的 Frobenius 映射的构造之上,使用了 Parshall-Wang 对量子群 $mathcal{O}_q(SL_3).$ 的 Frobenius 映射。
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引用次数: 0
Higher categories of push-pull spans, II: Matrix factorizations 推拉跨度的更高类别,II:矩阵因式分解
Pub Date : 2024-08-30 DOI: arxiv-2409.00219
Lorenzo Riva
This is the second part of a project aimed at formalizing Rozansky-Wittenmodels in the functorial field theory framework. In the first part weconstructed a symmetric monoidal $(infty, 3)$-category $mathscr{CRW}$ ofcommutative Rozansky-Witten models with the goal of approximating the$3$-category of Kapustin and Rozansky. In this paper we extend work of Brunner,Carqueville, Fragkos, and Roggenkamp on the affine Rozansky-Witten models: weexhibit a functor connecting their $2$-category of matrix factorizations withthe homotopy $2$-category of $mathscr{CRW}$, and calculate the associatedTFTs.
这是一个项目的第二部分,旨在将罗赞斯基-维滕模型形式化在函子场论框架中。在第一部分中,我们以近似卡普斯丁和罗赞斯基的3元范畴为目标,构建了一个对称单元$(infty, 3)$范畴$mathscr{CRW}$的交换罗赞斯基-维滕模型。在本文中,我们扩展了布鲁纳、卡克维尔、弗拉格科斯和罗根坎普关于仿射罗赞斯基-维滕模型的工作:我们展示了一个连接他们的矩阵因式2元类与$mathscr{CRW}$的同调2元类的函子,并计算了相关的TFT。
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引用次数: 0
On $mathbb{Z}/2mathbb{Z}$ permutation gauging 关于 $mathbb{Z}/2mathbb{Z}$ 周期测量
Pub Date : 2024-08-30 DOI: arxiv-2408.17195
Zhengwei Liu, Yuze Ruan
We explicitly construct a (unitary) $mathbb{Z}/2mathbb{Z}$ permutationgauging of a (unitary) modular category $mathcal{C}$. In particular, theformula for the modular data of the gauged theory is provided in terms ofmodular data of $mathcal{C}$, which provides positive evidence of thereconstruction program. Moreover as a direct consequence, the formula for thefusion rules is derived, generalizing the results ofEdie-Michell-Jones-Plavnik. Our construction explicitly shows the genus-$0$data of the gauged theory contains higher genus data of the original theory. Asapplications, we obtain an identity for the modular data that does not comefrom modular group relations, and we prove that representations of thesymmetric mapping class group (associated to closed surfaces) coming fromweakly group theoretical modular categories have finite images.
我们明确地构造了一个(单元的)模块范畴 $mathcal{C}$ 的(单元的)$mathbb{Z}/2mathbb{Z}$ 置换测量。特别是,我们用$mathcal{C}$的模块数据提供了测量理论的模块数据公式,这就为其中的构造程序提供了积极的证据。此外,作为直接结果,还推导出了融合规则公式,概括了埃迪-米歇尔-琼斯-普拉夫尼克的结果。我们的构造明确地显示了参量理论的0元属数据包含了原始理论的高属数据。在应用中,我们得到了模数数据的一个特性,它不是来自模数群关系,我们还证明了来自弱群论模数范畴的对称映射类群(与封闭曲面相关)的表示具有有限图像。
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引用次数: 0
First-order deformations of freely generated vertex algebras 自由生成顶点代数的一阶变形
Pub Date : 2024-08-29 DOI: arxiv-2408.16309
Vladimir Kovalchuk, Fei Qi
We solve the problem of how to classify the first-order vertex-algebraicdeformations for any grading-restricted vertex algebra $V$ that is freelygenerated by homogeneous elements of positive weights. We approach by computingthe second cohomology $H^2_{1/2}(V, V)$ constructed by Yi-Zhi Huang. We startwith the cocycle on two generators and show that its cohomology class iscompletely determined by its singular part. To extend the cocycle to any pairof elements in $V$, we take a generating function approach, formulate thecocycle equation, and show that all the complementary solutions arecoboundaries. Then we use a very general procedure to construct a particularsolution. The procedure applies to vertex algebras that are not freelygenerated. As a by-product, we show that $H^2_{1/2}(V, V) = H^2_infty(V, V)$.Using these results, we explicitly determine the first-order deformations ofthe universal Virasoro VOA $Vir_c$, universal affine VOA $V^l(mathfrak{g})$,Heisenberg VOA $V^l(mathfrak{h})$, and the universal Zamolodchikov VOA$W_3^c$.
我们要解决的问题是,如何对任何由正权重的同质元素自由生成的等级受限顶点代数 $V$ 的一阶顶点代数变形进行分类。我们通过计算黄以智构建的第二同调 $H^2_{1/2}(V, V)$ 来进行研究。我们从两个发电机上的循环开始,证明其同调类完全由其奇异部分决定。为了将该循环扩展到 $V$ 中的任意 pairof 元素,我们采用了生成函数的方法,提出了循环方程,并证明了所有互补解都是边界。然后,我们使用一个非常通用的程序来构造一个特定的解。该过程适用于非自由生成的顶点代数。作为副产品,我们证明了 $H^2_{1/2}(V, V) = H^2_infty(V, V)$ 。利用这些结果,我们明确地确定了通用维拉索罗 VOA $Vir_c$、通用仿射 VOA $V^l(mathfrak{g})$、海森堡 VOA $V^l(mathfrak{h})$ 以及通用扎莫洛奇科夫 VOA $W_3^c$ 的一阶变形。
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引用次数: 0
Notes on gauging noninvertible symmetries, part 2: higher multiplicity cases 关于测量不可逆对称的说明,第 2 部分:高倍率情况
Pub Date : 2024-08-29 DOI: arxiv-2408.16811
Alonso Perez-Lona, Daniel Robbins, Eric Sharpe, Thomas Vandermeulen, Xingyang Yu
In this paper we discuss gauging noninvertible zero-form symmetries in twodimensions, extending our previous work. Specifically, in this work we discussmore general gauged noninvertible symmetries in which the noninvertiblesymmetry is not multiplicity free, and discuss the case of Rep$(A_4)$ indetail. We realize Rep$(A_4)$ gaugings for the $c = 1$ CFT at the exceptionalpoint in the moduli space and find new self-duality under gauging a certainnon-group algebra object, leading to a larger noninvertible symmetry Rep$(SL(2,Z_3))$. We also discuss more general examples of decomposition intwo-dimensional gauge theories with trivially-acting gauged noninvertiblesymmetries.
在本文中,我们讨论了二维中的测量不可反转零形式对称性,这是对我们之前工作的扩展。具体地说,在这项工作中,我们讨论了更一般的测量不可反转对称性,其中的不可反转对称性不是无多重性的,并详细讨论了Rep$(A_4)$ 的情况。我们在模量空间的例外点实现了 $c = 1$ CFT 的 Rep$(A_4)$测量,并发现了测量某个非群代数对象下的新自偶性,从而得到了更大的非可逆对称性 Rep$(SL(2,Z_3))$。我们还讨论了在二维规理论中分解具有微不足道作用的测控非不可逆对称性的更一般的例子。
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引用次数: 0
Smooth geometry of bi-quadratic algebras on three generators with PBW basis 具有 PBW 基的三发电机上的二二次方程组的光滑几何学
Pub Date : 2024-08-29 DOI: arxiv-2408.16648
Andrés Rubiano, Armando Reyes
In this paper, we investigate the differential smoothness of bi-quadraticalgebras on three generators with PBW basis.
在本文中,我们研究了具有 PBW 基的三发电机上的双四边形布拉的微分平滑性。
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引用次数: 0
R-matrices from Feynman Diagrams in 5d Chern-Simons Theory and Twisted M-theory 五维切尔-西蒙斯理论和扭曲 M 理论中的费曼图 R 矩
Pub Date : 2024-08-28 DOI: arxiv-2408.15732
Meer Ashwinkumar
In this work we study the analogues of R-matrices that arise in 5dnon-commutative topological-holomorphic Chern-Simons theory, which is known todescribe twisted M-theory. We first study the intersections of line and surfaceoperators in 5d Chern-Simons theory, which correspond to M2- and M5-branes,respectively. A Feynman diagram computation of the correlation function of thisconfiguration furnishes an expression reminiscent of an R-matrix derivable from4d Chern-Simons theory. We explain how this object is related to a Miuraoperator that is known to realize (matrix-extended) $W_{infty}$-algebras. For5d Chern-Simons theory with nonabelian gauge group, we then perform a Feynmandiagram computation of coproducts for deformed double current algebras andmatrix-extended $W_{infty}$-algebras from fusions of M2-branes, M5-branes, andM2-M5 intersections.
在这项工作中,我们研究了在 5d 非交换拓扑-多态 Chern-Simons 理论中出现的 R 矩的类似物,该理论被称为描述扭曲的 M 理论。我们首先研究了 5d Chern-Simons 理论中线和面运算符的交点,它们分别对应于 M2 和 M5-branes。通过费曼图计算这种配置的相关函数,我们得到了一个类似于可从 4d Chern-Simons 理论推导出的 R 矩阵的表达式。我们解释了这个对象是如何与已知可以实现(矩阵扩展的)$W_{infty}$-代数的三浦算子相关联的。对于具有非阿贝尔规规群的5d切尔-西蒙斯理论,我们将从M2-branes、M5-branes和M2-M5交集的融合中,对变形双电流代数和矩阵扩展的$W_{infty}$代数的共乘进行费曼迪图计算。
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引用次数: 0
期刊
arXiv - MATH - Quantum Algebra
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