Claudia Pinzari
An abstract characterization of the representation category of the Woronowicz twisted SU(d) group is given, generalizing analogous results known in the classical case
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Braided quantum $\mathrm{SU}(2)$ group - a case study
本文研究复数q(0<|q|<1)下的辫状紧量子群SU_q(2)，探讨Haar测度的存在性、缩放群、反自同态及其极分解，以及相关辫状Hopf代数的构造。
Braided quantum SU(2) groups
该研究构造了非零复参数q下的SU(2) q形变族，明确实q时对应Woronowicz紧量子SU_q(2)群，非实q时为带圆周群作用C*-代数张量积函子的辫子紧量子群，拓展了量子群形变研究范围。
Given a finite dimensional Hilbert space H and a collection of operators between its tensor powers satisfying certain properties, we give a category-free proof of the existence of a compact quantum group G with a fundamental representation U on H such that the intertwiners between the tensor powers of U coincide with the given collection of operators. We then explain how the general version of Woronowicz's Tannaka-Krein duality can be deduced from this.
Quantum $E(2)$ groups for complex deformation parameters
本文构造了复参数下 $E(2)$ 群的 $q$ 形变作为局部紧辫子量子群，并基于 Inönü-Wigner 群收缩的量子类比，通过收缩 $U_{q}(2)$ 群实现了辫子 $E_{q}(2)$ 群的玻色化。
Let G be a classical compact Lie group and G_μthe associated compact matrix quantum group deformed by a positive parameter μ(or a nonzero and real μin the type A case). It is well known that the category Rep(G_μ) of unitary f.d. representations of G_μis a braided tensor C*-category. We show that any braided tensor *-functor from Rep(G_μ) to another braided tensor C*-category with irreducible tensor unit is full if |μ|\neq 1. In particular, the functor of restriction to the representation category of a proper compact quantum subgroup, cannot be made into a braided functor. Our result also shows…
We generalise the notions of semi-regularity, regularity, and bi-regularity to unitary solutions of the braided Pentagon equation in concrete W*-categories with semi-regular/regular/bi-regular braiding, and study their properties. We show, for example, that under bi-regularity-assumptions, the leg-algebras form braided C*-bialgebras. Moreover, we "close the circle" for the representation categories: The braiding on the Yetter-Drinfeld category of a (semi-)regular multiplicative unitary in a category with (semi-)regular braiding is again (semi-)regular.
The crossed braided tensor category of twisted and untwisted representations of the Heisenberg conformal net
本研究证明海森堡共形网的扭曲与未扭曲表示范畴是群ℝ的连续Tambara-Yamagami范畴，计算了结合子和ℤ/2交叉辫，通过ℤ/2等变得到不动点共形网Heis^ℤ/2的表示的辫连续张量范畴，首次显式计算含张量积为不可约表示直积分的不可约表示的共形网表示范畴。
We use the theory of regular objects in tensor categories to clarify the passage between braided multiplicative unitaries and multiplicative unitaries with projection. The braided multiplicative unitary and its semidirect product multiplicative unitary have the same Hilbert space representations. We also show that the multiplicative unitaries associated to two regular objects for the same tensor category are equivalent and hence generate isomorphic C*-quantum groups. In particular, a C*-quantum group is determined uniquely by its tensor category of representations on Hilbert space, and any fun…
We want to establish the "braided action" (defined in the paper) of the DHR category on a universal environment algebra as a complete invariant for completely rational chiral conformal quantum field theories. The environment algebra can either be a single local algebra, or the quasilocal algebra, both of which are model-independent up to isomorphism. The DHR category as an abstract structure is captured by finitely many data (superselection sectors, fusion, and braiding), whereas its braided action encodes the full dynamical information that distinguishes models with isomorphic DHR categories.…
We associate to each Temperley-Lieb-Jones C*-tensor category $\mathcal{T}\!\mathcal{L}\mathcal{J}(δ)$ with parameter $δ$ in the discrete range $\{2\cos(π/(k+2))\,:\,k=1,2,\ldots\}\cup\{2\}$ a certain C*-algebra $\mathcal{B}$ of compact operators. We use the unitary braiding on $\mathcal{T}\!\mathcal{L}\mathcal{J}(δ)$ to equip the category $\mathrm{Mod}_{\mathcal{B}}$ of (right) Hilbert $\mathcal{B}$-modules with the structure of a braided C*-tensor category. We show that $\mathcal{T}\!\mathcal{L}\mathcal{J}(δ)$ is equivalent, as a braided C*-tensor category, to the full subcategory $\mathrm{Mo…
Superselection theory for 2D braided quantum spin systems via Connes fusion
本文利用Connes融合张量积，在不局域化的情况下构造了二维辫子量子自旋系统超选择扇区的等价辫子张量结构，并证明其与酉辫子融合范畴的ind-完备化反范畴等价。
Frobenius algebras associated with the $α$-induction for equivariantly braided tensor categories
本研究在G-辫子多张量范畴中给出G-等变α-归纳的范畴定义，在中性double范畴中构造G-等变α-归纳Frobenius代数，还定义G-等变全中心并证明其与该代数一致，推广了已有相关定理与构造。
We show that a quantum field theory A living on the line and having a group G of inner symmetries gives rise to a category GLoc A of twisted representations. This category is a braided crossed G-category in the sense of Turaev. Its degree zero subcategory is braided and equivalent to the usual representation category Rep A. Combining this with [29], where Rep A was proven to be modular for a nice class of rational conformal models, and with the construction of invariants of G-manifolds in [60], we obtain an equivariant version of the following chain of constructions: Rational CFT -> modular ca…
The maximal quantum group-twisted tensor product of C*-algebras
该研究构造了C*-代数极小子量子群扭张量积的极大对应物，证明其满足辫子对易表示泛性，可给出拟三角C*-量子群余作用的幺半结构，是Yetter-Drinfeld C*-代数双范畴的水平合成，且群余作用下与非扭张量积的Rieffel形变一致。
Braided quantum groups and their bosonizations in the $C^*$-algebraic framework
本研究在$C^*$-代数框架下利用乘法酉算子建立辫子量子群一般理论，构造$\bG$上辫子$C^*$-量子群，建立其与带投影$C^*$-量子群的一一对应，推广Radford和Majid的玻色子化构造，并给出复量子平面等实例。
Hopf-cyclic coefficients in the braided setting
本文在刚性辫子范畴中定义带辫子模系数的anti-Yetter-Drinfeld模，证明Hopf代数模范畴的Hochschild与循环同调范畴的分解结果，并将其归结为底范畴Hochschild同调的分解。
In this paper we apply Rieffel deformation to C*- tensor product viewed as a functor on the category of C*-algebras with an abelian group action. In the case of the Rieffel deformation of a quantum group with the action by automorphisms the deformed tensor product enables us to view the deformed object as a braided quantum group. We construct a bicharacter for a braided quantum group and the dual braided quantum group. We employ our method to get a braided quantum Minkowski space. Its description in terms of the deformed space-time coordinates is provided.
Let $\mathfrak u$ be a compact semisimple Lie algebra, and $σ$ be a Lie algebra involution of $\mathfrak u$. Let Rep$_q(\mathfrak u)$ be the ribbon braided tensor C*-category of $U_q(\mathfrak u)$-representations for $0<q<1$. We introduce three module C*-categories over Rep$_q(\mathfrak u)$ starting from the input data $(\mathfrak u,σ)$. The first construction is based on the theory of cyclotomic KZ-equations. The second construction uses the notion of quantum symmetric pair as developed by G. Letzter. The third construction uses a variation of Drinfeld twisting. In all three cases the module …
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