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A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

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17355269 · May 202619922001200920172026
48 results for quantum traces

Propose a new 3d quantum trace map that agrees with Garoufalidis and Yu's construction and extends to certain manifolds with ideal triangulated boundaries.

problem Relationship between two constructions of 3d quantum trace maps.
method Propose a new 3d quantum trace map.
result Proposed 3d quantum trace map agrees with Garoufalidis and Yu's construction and extends to certain manifolds with ideal triangulated boundaries.

Quantum trace map defines invariants for knots and links, confirming a length conjecture.

problem Defining invariants for knots and links in hyperbolic 3-manifolds.
method Introducing a quantum trace map for ideally triangulated knot complements, combining with state-integral models.
result Perturbative invariants determine an asymptotic expansion of the Jones polynomial, confirming the length conjecture.

Unified framework combines trace-induced quantum kernels for improved machine learning models.

problem Improving performance of quantum machine learning models using trace-induced kernels.
method Developed a unified framework combining various trace-induced quantum kernels, including global fidelity and local projected kernels, as Lego kernels.
result Local projected kernels can achieve comparable performance to global fidelity kernels with fewer quantum resources.

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.

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.

The abstract discusses new 3-manifold invariants and ETQFTs from Lie superalgebra representations.

problem Developing new 3-manifold invariants and ETQFTs from Lie superalgebra representations.
method Examining two m-traces in the category of representations over quantum sl(mn)\mathfrak{sl}(m|n), considering quotients, and conjecturing generalizations.
result Quotients of perturbative modules over quantum sl(mn)\mathfrak{sl}(m|n) lead to 3-manifold invariants and ETQFTs.

We study new invariants of elliptic partial differential operators acting on sections of a vector bundle over a closed Riemannian manifold that we call the relativistic heat trace and the quantum heat traces. We obtain some reduction formulas expressing these new invariants in terms of some integral transforms of the u…

2016-11-11abs ↗pdf ↗

We show how the quantum trace map of Bonahon and Wong can be constructed in a natural way using the skein algebra of Muller, which is an extension of the Kauffman bracket skein algebra of surfaces. We also show that the quantum Teichmüller space of a marked surface, defined by Chekhov-Fock (and Kashaev) in an abstract …

2015-11-19abs ↗pdf ↗

Develops trace class operators and inverse Laplacian theory for infinite dimensions.

problem Understanding trace class operators and inverse Laplacian on infinite dimensional spaces.
method Presentation of trace class operators and construction of inverse Laplacian on closed manifolds.
result Original trace computations involving the inverse Laplacian on the torus.

We consider two different quantizations of the character variety consisting of all representations of surface groups in SL_2. One is the skein algebra considered by Przytycki-Sikora and Turaev. The other is the quantum Teichmuller space introduced by Chekhov-Fock and Kashaev. We construct a homomorphism from the skein …

2010-03-27abs ↗pdf ↗

Quantizes geodesic lengths in Teichmüller spaces using algebraic methods.

problem Constructing quantized geodesic lengths for Teichmüller spaces.
method Developed quantum trace maps and investigated algebraic structures.
result Showed a recursion relation and commutation properties for quantized trace-of-monodromy.

Motivated by topology, we develop a general theory of traces and shadows for an endobicategory, which is a~pair: bicategory C\mathbf{C} and endobifunctor Σ ⁣:CCΣ\colon \mathbf C \to\mathbf C. For a graded linear bicategory and a fixed invertible parameter qq, we quantize this theory by using the endofunctor ΣqΣ_q such th…

2016-05-11abs ↗pdf ↗

We show that the reduced quantum hyperbolic invariants of pseudo-Anosov diffeomorphisms of punctured surfaces are intertwiners of local representations of the quantum Teichmüller spaces. We characterize them as the only intertwiners that satisfy certain natural cut-and-paste operations of topological quantum field theo…

2017-04-19abs ↗pdf ↗

In earlier work, Helen Wong and the author discovered certain "miraculous cancellations" for the quantum trace map connecting the Kauffman bracket skein algebra of a surface to its quantum Teichmueller space, occurring when the quantum parameter qq is a root of unity. The current paper is devoted to giving a more repr…

2017-08-25abs ↗pdf ↗

Quantum stochastic flow computes heat kernel traces for Ricci flat manifolds.

problem Computing heat kernel traces for Ricci flat manifolds.
method Quantum stochastic differential equation (qsde) on Fock space over L2L^2 differential 1-forms, adapted flow construction.
result Trace of the connection Laplacian heat kernel can be computed over any compact Ricci-flat Riemannian manifold.

Introduces LRY skein algebras generalizing Kauffman bracket and Roger-Yang skein algebras.

problem Generalizing skein algebras for surfaces with arbitrary ground rings.
method Constructs LRY skein algebras, quantum traces, and Dehn-Thurston coordinates.
result LRY skein algebras are domains, have degenerations to monomial subalgebras of quantum tori, and are orderly finitely generated.

Quantum channels' contraction under privacy constraints studied.

problem Understanding the privacy constraints on quantum channel contractions.
method Established upper bounds on contraction coefficients for specific divergences under QLDP constraints.
result Upper bounds and full characterization of contraction coefficients for specific quantum distances.

Let FF be a finite type surface and ζζ a complex root of unity. The Kauffman bracket skein algebra Kζ(F)K_ζ(F) is an important object in both classical and quantum topology as it has relations to the character variety, the Teichmüller space, the Jones polynomial, and the Witten-Reshetikhin-Turaev Topological Quantum Fie…

2019-02-06abs ↗pdf ↗

By introducing a finer version of the Kauffman bracket skein algebra, we show how to decompose the Kauffman bracket skein algebra of a surface into elementary blocks corresponding to the triangles in an ideal triangulation of the surface. The new skein algebra of an ideal triangle has a simple presentation. This gives …

2016-09-16abs ↗pdf ↗

We study the geometry of determinant line bundles associated to Dirac operators on compact odd dimensional manifolds. Physically, these arise as (local) vacuum line bundles in quantum gauge theory. We give a simplified derivation of the commutator anomaly formula using a construction based on noncyclic trace extensions…

2002-05-14abs ↗pdf ↗

The density matrices are positively semi-definite Hermitian matrices of unit trace that describe the state of a quantum system. The goal of the paper is to develop minimax lower bounds on error rates of estimation of low rank density matrices in trace regression models used in quantum state tomography (in particular, i…

2015-07-17abs ↗pdf ↗

We construct a Hennings type logarithmic invariant for restricted quantum sl(2)\mathfrak{sl}(2) at a 2p2\mathsf{p}-th root of unity. This quantum group UU is not braided, but factorizable. The invariant is defined for a pair: a 3-manifold MM and a colored link LL inside MM. The link LL is split into two parts colored…

2017-05-08abs ↗pdf ↗

Quantum probability theory reveals hidden structure in joint probability distributions.

problem Understanding hidden structure in joint probability distributions.
method Modeling joint probability distributions as density operators and applying partial trace.
result Decoding extra information in reduced density operators that captures subsystem interactions.

In this article we construct link invariants and 3-manifold invariants from the quantum group associated with Lie superalgebra sl(21)\mathfrak{sl}(2|1). This construction based on nilpotent irreducible finite dimensional representations of quantum group Uξsl(21)\mathcal{U}_ξ\mathfrak{sl}(2|1) where ξξ is a root of unity of odd …

2016-07-13abs ↗pdf ↗

New proof of SL(n) skein algebra for twice punctured sphere, showing it's a polynomial algebra.

problem Proving the structure of SL(n) skein algebra for a specific surface.
method Constructing a linear basis of explicit SL(n) webs, proving spanning and linear independence.
result SL(n) skein algebra of twice punctured sphere is a commutative polynomial algebra in n-1 generators.

We prove that the balanced Chekhov-Fock algebra of a punctured triangulated surface is isomorphic to a skein algebra which is a deformation of the algebra of regular functions of some abelian character variety. We first deduce from this observation a classification of the irreducible representations of the balanced Che…

2019-07-02abs ↗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 ↗