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48 results for quantum cluster algebra

Quantum cluster algebras for surfaces with coefficients defined using skein theory.

problem Defining quantum cluster algebras for surfaces with coefficients.
method Introducing a skein algebra and proving it has a quantum cluster structure.
result The skein algebra of a walled surface naturally generalizes quantum cluster algebras of marked surfaces.

New knot invariants derived using quantum cluster algebras.

problem Deriving new knot invariants from quantum cluster algebras.
method Interpreting RR-matrix of Uq(sl2)U_q(\mathfrak{sl}_2) as cluster transformation, introducing auxiliary parameter εε.
result Derives perturbed-Alexander invariants with higher-order terms in εε.

New solutions to 3D integrability equations using quantum cluster algebras.

problem Constructing solutions to the tetrahedron and 3D reflection equations.
method Extending quantum cluster algebra approach to Fock-Goncharov quivers and investigating cluster transformations.
result Explicit formulas for matrix elements of solutions derived for typical representations.

Develops quantum cluster algebra approach to solve tetrahedron equation.

problem Investigates a three-dimensional generalization of the Yang-Baxter equation.
method Quantum cluster algebra approach with realization of quantum Y-variables in terms of q-Weyl algebras.
result Obtains a solution with three spectral parameters and reproduces Sergeev's R matrix.

Quantum cluster algebra constructed from web skein relations on surfaces.

problem Quantization of cluster structures on moduli spaces of SL3 local systems.
method Constructing a quantum cluster algebra inside the skew-field of a skein algebra of unpunctured surfaces.
result Laurent expressions of webs in clusters have positive coefficients.

We construct a braiding operator in terms of the quantum dilogarithm function based on the quantum cluster algebra. We show that it is a q-deformation of the R-operator for which hyperbolic octrahedron is assigned. Also shown is that, by taking q to be a root of unity, our braiding operator reduces to the Kashaev R-mat…

2014-04-08abs ↗pdf ↗

This paper defines several algebras associated to an oriented surface SS with a finite set of marked points on the boundary. The first is the skein algebra Skq(S)Sk_q(S), which is spanned by links in the surface which are allowed to have endpoints at the marked points, modulo several locally defined relations. The product…

2012-03-30abs ↗pdf ↗

Quantum trace maps for surfaces are shown to be compatible under triangulations.

problem Constructing and understanding quantum trace maps for surfaces.
method Developed quantum mutation maps between subalgebras of quantum torus algebras for different triangulations.
result Quantum trace maps are natural and independent of triangulation choices.

This work constructs a finite-dimensional projective representation for a quantum Teichmüller model.

problem Quantum Teichmüller theory and its finite-dimensional representation.
method Explicit construction using cyclic quantum dilogarithm and mutations of coefficients.
result Reconstruction of quantum Teichmüller space with explicit intertwiners.

Study of sp4\mathfrak{sp}_4-webs on surfaces, proving cluster algebra structure.

problem Understanding sp4\mathfrak{sp}_4-webs and their cluster algebra properties.
method Introduced skein algebra and cluster structure, proved positivity.
result Proved Ssp4,ΣZq[1]\mathscr{S}_{\mathfrak{sp}_4,Σ}^{\mathbb{Z}_q}[\partial^{-1}] is a quantum cluster algebra.

We use Bonahon-Wong's trace map to study character varieties of the once-punctured torus and of the 4-punctured sphere. We clarify a relationship with cluster algebra associated with ideal triangulations of surfaces, and we show that the Goldman Poisson algebra of loops on surfaces is recovered from the Poisson structu…

2017-11-09abs ↗pdf ↗

We define a canonical map from a certain space of laminations on a punctured surface into the quantized algebra of functions on a cluster variety. We show that this map satisfies a number of special properties conjectured by Fock and Goncharov. Our construction is based on the "quantum trace" map introduced by Bonahon …

2015-09-04abs ↗pdf ↗

A cluster variety of Fock and Goncharov is a scheme constructed by gluing split algebraic tori, called seed tori, via birational gluing maps called mutations. In quantum theory, the ring of functions on seed tori are deformed to non-commutative rings, represented as operators on Hilbert spaces. Mutations are quantized …

2016-02-02abs ↗pdf ↗

Explains a property of algebras related to quantum field theories.

problem Explains a property of algebras encoding line defects in quantum field theories.
method Physical explanation of a property of quantized algebras using dualities and field theories.
result Physical explanation of a large center in quantized algebras when the deformation parameter is a root of unity.

Counting the number of clusters, when these clusters overlap significantly is a challenging problem in machine learning. We argue that a purely mathematical quantum theory, formulated using the path integral technique, when applied to non-physics modeling leads to non-physics quantum theories that are statistical in na…

2020-01-03abs ↗pdf ↗

In this work, the Z3_3-graded differential geometry of the quantum plane is constructed. The corresponding quantum Lie algebra and its Hopf algebra structure are obtained. The dual algebra, i.e. universal enveloping algebra of the quantum plane is explicitly constructed and an isomorphism between the quantum Lie algeb…

2002-01-03abs ↗pdf ↗

Cluster varieties are geometric objects that have recently found applications in several areas of mathematics and mathematical physics. This thesis studies the geometry of a large class of cluster varieties associated to compact oriented surfaces with boundary. The main original contribution of this thesis is to develo…

2016-06-24abs ↗pdf ↗

Clustering algorithms are a cornerstone of machine learning applications. Recently, a quantum algorithm for clustering based on the k-means algorithm has been proposed by Kerenidis, Landman, Luongo and Prakash. Based on their work, we propose a quantum expectation-maximization (EM) algorithm for Gaussian mixture models…

2019-08-19abs ↗pdf ↗

We present a differential calculus on the extension of the quantum plane obtained considering that the (bosonic) generator xx is invertible and furthermore working polynomials in lnx\ln x instead of polynomials in xx. We call quantum Lie algebra to this extension and we obtain its Hopf algebra structure and its dual H…

2003-04-24abs ↗pdf ↗

Quantum GBS boosts asset clustering for robust statistical arbitrage portfolios.

problem Identifying co-moving assets from correlation matrices for statistical arbitrage.
method Mapping S&P 500 correlation data to GBS-compatible adjacency matrices, benchmarking classical and quantum clustering algorithms.
result Quantum GBS generates superior alpha during high volatility periods, persisting under low-loss conditions.

In GT/0006019 oriented quantum algebras were motivated and introduced in a natural categorical setting. Invariants of knots and links can be computed from oriented quantum algebras, and this includes the Reshetikhin-Turaev theory for Ribbon Hopf algebras. Here we continue the study of oriented quantum algebras from a m…

2000-06-03abs ↗pdf ↗

Unified geometric framework for quantum states using dual number algebras.

problem Representing quantum states in a geometrically unified way.
method Smooth embeddings into higher-order dual number algebras and algebraic flows.
result Established nilpotent dual algebras as a geometric landscape for quantum kinematics.

Center identified in stated skein algebra for quantum traces.

problem Understanding the center of the stated skein algebra.
method Analyzing the algebra as a generalization of Kauffman bracket skein algebra, focusing on the case when the quantum parameter is a root of unity.
result Simple description and dimension calculation of the center over the center module.

It is shown that there is a CC^*-algebraic quantum group related to any double Lie group. An algebra underlying this quantum group is an algebra of a differential groupoid naturally associated with a double Lie group

2002-03-11abs ↗pdf ↗

We expose a K-theoretic approach to study group C*-algebras and C*-algebraic compact quantum groups: 1. The conception of multidimensional geometric quantization and the index of group C*-algebras; 2. the entire homology of noncommutative de Rham currents and the noncommutative Chern characters, and their computation f…

1998-08-06abs ↗pdf ↗

Modified Hennings invariant defined using quantum groups and integrals.

problem Defining a modified Hennings invariant using quantum groups.
method Topological ribbon Hopf algebra, discrete Fourier transforms, symmetrized graded integral, modified trace.
result Modified graded Hennings invariant defined and extended to empty manifolds.

Quantum computing for machine learning attracts increasing attention and recent technological developments suggest that especially adiabatic quantum computing may soon be of practical interest. In this paper, we therefore consider this paradigm and discuss how to adopt it to the problem of binary clustering. Numerical …

2017-06-17abs ↗pdf ↗