Higgs bundles, harmonic maps, and pleated surfaces

This paper unites the gauge-theoretic and hyperbolic-geometric perspectives on the asymptotic geometry of the character variety of SL(2,C) representations of a surface group. Specifically, we find an asymptotic correspondence between the analytically defined limiting configuration of a sequence of s...

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Hauptverfasser: Ott, Andreas (VerfasserIn) , Swoboda, Jan (VerfasserIn) , Wentworth, Richard A. (VerfasserIn) , Wolf, Michael (VerfasserIn)
Dokumenttyp: Article (Journal) Kapitel/Artikel
Sprache:Englisch
Veröffentlicht: 12 Feb 2021
Ausgabe:Version v3
In: Arxiv
Year: 2021, Pages: 1-77
DOI:10.48550/arXiv.2004.06071
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.48550/arXiv.2004.06071
Verlag, lizenzpflichtig, Volltext: http://arxiv.org/abs/2004.06071
Volltext
Verfasserangaben:Andreas Ott, Jan Swoboda, Richard Wentworth, and Michael Wolf

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520 |a This paper unites the gauge-theoretic and hyperbolic-geometric perspectives on the asymptotic geometry of the character variety of SL(2,C) representations of a surface group. Specifically, we find an asymptotic correspondence between the analytically defined limiting configuration of a sequence of solutions to the SU(2) self-duality equations on a closed Riemann surface constructed by Mazzeo-Swoboda-Weiss-Witt, and the geometric topological shear-bend parameters of equivariant pleated surfaces in hyperbolic three-space due to Bonahon and Thurston. The geometric link comes from the nonabelian Hodge correspondence and a study of high energy degenerations of harmonic maps. Our result has several applications. We prove: (1) the local invariance of the partial compactification of the moduli space of solutions to the self-duality equations by limiting configurations; (2) a refinement of the harmonic maps characterization of the Morgan-Shalen compactification of the character variety; and (3) a comparison between the family of complex projective structures defined by a quadratic differential and the realizations of the corresponding flat connections as Higgs bundles, as well as a determination of the asymptotic shear-bend cocycle of Thurston's pleated surface. 
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