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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.

168,742 papers · 148 categories

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9192837 · Jul 202019922001200920172026
48 results for Hitchin's properness

The paper generalizes deformation results for Fuchsian representations and shows proper affine actions.

problem Infinitesimal deformations of Fuchsian representations do not act properly in certain directions.
method Using results from Labourie--Wentworth, Potrie--Sambarino, and Smilga, the authors introduce affine versions of cross ratios and triple ratios, Margulis invariants, and relate them to infinitesimal Jordan projections.
result A general criterion for existence of proper affine actions in terms of Margulis invariant spectra.

Study describes moduli spaces of flat bundles on Sasakian manifolds.

problem Understanding moduli spaces of flat bundles on Sasakian manifolds.
method Shows moduli space of simple flat bundles is a union of spaces with fixed basic structures.
result Detailed description of non-abelian Hodge correspondence on compact Sasakian manifolds.

Canonical maps connect complex structures to Hitchin components.

problem Connecting higher complex structures to Hitchin components.
method Equivariant vector bundle construction and canonical isomorphisms.
result Canonical diffeomorphisms between spaces of higher complex structures and Hitchin components.

A principal pair consists of a holomorphic principal GG-bundle together with a holomorphic section of an associated Kaehler fibration. Such objects support natural gauge theoretic equations coming from a moment map condition, and also admit a notion of stability based on Geometric Invariant Theory. The Hitchin--Kobaya…

2002-06-03abs ↗pdf ↗

Defines and parametrizes sl(2)\mathfrak{sl}(2)-type singular fibres in symplectic and odd orthogonal Hitchin systems.

problem Characterizing and understanding singular fibres in Hitchin systems.
method Stratification by semi-abelian spectral data, study of irreducible components, global description of degenerations.
result Extension of Langlands duality to sl(2)\mathfrak{sl}(2)-type Hitchin fibres.

The paper establishes a Lagrangian correspondence linking different geometric structures on complex varieties.

problem Identifying relationships between different geometric structures on complex varieties.
method Using perfect complexes and shifted symplectic geometries, the paper establishes a Lagrangian correspondence.
result A Lagrangian correspondence between shifted symplectic geometries of flat and Higgs perfect complexes.

Study asymptotics of hyperkähler geometry on singular fibers of Hitchin moduli space.

problem Asymptotic hyperkähler geometry of SL2(C)\mathrm{SL}_2(\mathbb{C})-Hitchin moduli space over singular fibers.
method Extension of exponential convergence results to locally fiducial Higgs bundles and subintegrable systems.
result Hyperkähler metric converges exponentially to semi-flat metric on subintegrable systems.

Study shows rapid decay of Hitchin metric from semi-flat metric on Higgs bundles.

problem Analyzing the asymptotic behavior of the Hitchin metric on moduli spaces of Higgs bundles.
method Examined the decay rate of the difference between Hitchin and semi-flat metrics on smooth spectral curves.
result Exponential decay of the difference between Hitchin and semi-flat metrics as t approaches infinity.

Survey on 2k2k-Hitchin equations and Higgs bundles from geometric perspective.

problem Understanding 2k2k-Hitchin equations through Higgs bundles and complex geometry.
method Review of Higgs bundles, holomorphic vector bundles, and Hermite-Yang-Mills equations; geometric tools applied to simplify equations.
result Simplified 2k2k-Hitchin equations to a set of two equations for Higgs bundles.

The paper studies sequences of solutions to Hitchin-Simpson equations on Kähler manifolds.

problem Behavior of sequences of solutions to Hitchin-Simpson equations on Kähler manifolds.
method Compactness result for connections and renormalized Higgs fields.
result Every Z/2\mathbb{Z}/2 harmonic 1-form can be deformed into a sequence of solutions.

Study on harmonic metrics for rank 3 Higgs bundles in Hitchin section.

problem Finding compatible harmonic metrics for rank 3 Higgs bundles in the Hitchin section.
method Defined a symmetric pairing and studied spectral curves as 2-sheeted branched coverings.
result Gave a condition for Higgs bundles on C\mathbb{C} or C\mathbb{C}^* to have compatible harmonic metrics.

We study hyperkahler metrics and hyperholomorphic connections of Hitchin's moduli spaces after Gaiotto, Moore and Neitzke. Their construction via the twistor technique produces intricate wall crossing behaviors. For certain four dimensional Hitchin's moduli spaces local models and degeneration to local models near sing…

2012-08-18abs ↗pdf ↗

Study Kobayashi-Hitchin correspondence for special sheaves on Kähler manifolds.

problem Understanding the Kobayashi-Hitchin correspondence for specific sheaves.
method Using Hermitian-Yang-Mills flow on Kähler manifolds with simple normal crossing divisors.
result Established the correspondence for saturated reflexive parabolic sheaves.

We consider Hitchin's hyperkähler metric gL2g_{L^2} on the SU(n)SU(n)-Hitchin moduli space moduli space over a compact Riemann surface. We prove that the difference between the metric gL2g_{L^2} and a simpler "semiflat" hyperkähler metric gsfg_{\mathrm{sf}} is exponentially-decaying along generic rays in the Hitchin moduli s…

2018-10-03abs ↗pdf ↗

We show that a Hitchin representation is determined by the spectral radii of the images of simple, non-separating closed curves. As a consequence, we classify isometries of the intersection function on Hitchin components of dimension 3 and on the self-dual Hitchin components in all dimensions. As an important tool in t…

2017-03-21abs ↗pdf ↗

This paper proves Hitchin moduli spaces are ALG gravitational instantons.

problem Proving Hitchin moduli spaces are ALG gravitational instantons.
method Computing Torelli parameters for each Hitchin moduli space corresponding to different parabolic data.
result All Hitchin moduli spaces studied are ALG-D4D_4 gravitational instantons.

This paper is about geometric quantization of the Hitchin system. We quantize a Kahler form on the Hitchin moduli space (which is half the first Kahler form defined by Hitchin) by considering the Quillen bundle as the prequantum line bundle and modifying the Quillen metric using the Higgs field so that the curvature is…

2016-04-05abs ↗pdf ↗

Describes spectral data for singular fibres of a specific Hitchin system.

problem Characterizing singular fibres of the SL(2,C)\mathsf{SL}(2,\mathbb{C})-Hitchin system.
method Using Hecke transformations and analysis of parameter spaces, the paper stratifies and compactifies the singular spaces.
result Large classes of singular fibres are shown to be fibre bundles over Prym varieties.

In this paper we calculate the curvature of the Hitchin connection. We further show that a slight (possibly trivial) modification of the Hitchin connection has curvature equal to an explict given multiple of the Weil-Petersen symplectic form on Teichmüller space.

2016-09-05abs ↗pdf ↗

Study on Higgs bundles and hyperpolygon spaces using Hitchin metrics.

problem Investigating the Hitchin metric on moduli spaces of Higgs bundles.
method Using Hitchin hyperkähler metric and parabolic Deligne-Hitchin moduli space.
result Rescaled Hitchin metric converges to hyperpolygon space's hyperkähler metric in the semiclassical limit.

Paper extends Kobayashi-Hitchin correspondence to non-Kähler manifolds.

problem Applying Kobayashi-Hitchin correspondence to non-Kähler manifolds.
method Continuity method for vortex equation, Kobayashi-Hitchin correspondence for holomorphic pairs.
result Proved solvability of vortex equation on holomorphic vector bundles over compact Hermitian manifolds.

New metrics derived from Hölder distortion on Hitchin components.

problem Deriving metrics on Hitchin components from Hölder distortion.
method Expressing Thurston's metric in terms of Hölder regularity of boundary maps, associating stratified loci, and measuring relative Hölder distortion.
result First known geometrically significant complete metrics on Hitchin components for n>3n > 3.

We define Hitchin's moduli space for a principal bundle PP, whose structure group is a compact semisimple Lie group KK, over a compact non-orientable Riemannian manifold MM. We use the Donaldson-Corlette correspondence, which identifies Hitchin's moduli space with the moduli space of flat KCK^\mathbb{C}-connections,…

2012-11-05abs ↗pdf ↗

Sequences of Hitchin representations on surfaces are studied to describe their limits on trees.

problem Understanding the limits of sequences of Hitchin representations on surfaces.
method Using Fock-Goncharov coordinates on moduli spaces of flags.
result Non-trivial sufficient conditions for describing the limit of a sequence of Hitchin representations as an action on a tree.

New insights into currents of Hitchin representations with combinatorial restrictions.

problem Understanding currents associated with Hitchin representations.
method Defining dual spaces and analyzing combinatorial restrictions on self-intersection.
result Dual spaces of discrete boundary currents are polyhedral complexes with dimension at most n-1.

Goldman symplectic form and complex structure compatible on SL(3,R)\mathrm{SL}(3,\mathbb R) Hitchin component.

problem Compatibility of Goldman's symplectic form with complex structure on SL(3,R)\mathrm{SL}(3,\mathbb R) Hitchin component.
method Proof of compatibility between Goldman's symplectic form and Labourie-Loftin complex structure.
result Goldman symplectic form and complex structure determine a pseudo-Kähler structure on SL(3,R)\mathrm{SL}(3,\mathbb R) Hitchin component.

This is a review article on some applications of generalised parabolic structures to the study of torsion free sheaves and LL-twisted Hitchin pairs on nodal curves. In particular, we survey on the relation between representations of the fundamental group of a nodal curve and the moduli spaces of generalised parabolic …

2018-09-17abs ↗pdf ↗

Investigates nearly Kähler and parallel G2 manifolds using Hitchin functionals.

problem Stability analysis of nearly Kähler and parallel G2 manifolds.
method Gradient flow of Hitchin functionals, spectral decomposition of Hessians, Hitchin index.
result Hitchin index provides a lower bound for the Einstein co-index.

Characterizes flag geometries for Hitchin representations in SL3(R).

problem Understanding flag geometries associated with Hitchin representations in SL3(R).
method Geometric characterization based on invariant foliations and refraction flows.
result Constructs refraction flows for positive roots in general sl_n(R), with highest root flows being C^1+α.

We study simple root flows and Liouville currents for Hitchin representations. We show that the Liouville current is associated to the measure of maximal entropy for a simple root flow, derive a Liouville volume rigidity result, and construct a Liouville pressure metric on the Hitchin component.

2017-08-04abs ↗pdf ↗

We study a natural functional on the space of holomorphic sections of the Deligne-Hitchin moduli space of a compact Riemann surface, generalizing the energy of equivariant harmonic maps corresponding to twistor lines. We give a link to a natural meromorphic connection on the hyperholomorphic line bundle recently constr…

2019-03-06abs ↗pdf ↗