{"title":"HITCHIN CHARACTERS AND GEODESIC LAMINATIONS","authors":"F. Bonahon, G. Dreyer","doi":"10.4310/ACTA.2017.v218.n2.a1","DOIUrl":null,"url":null,"abstract":"For a closed surface S, the Hitchin component Hitn(S) is a preferred component of the character variety consisting of group homomorphisms from the fundamental group �1(S) to the Lie group PSLn(R). We construct a parametrization of the Hitchin component that is well-adapted to a geodesic laminationon the surface. This is a natural extension of Thurston's parametrization of the Teichmuller space T(S) by shear coordinates associated to �, corresponding to the case n = 2. However, significantly new ideas are needed in this higher dimensional case. The article concludes with a few applications.","PeriodicalId":50895,"journal":{"name":"Acta Mathematica","volume":null,"pages":null},"PeriodicalIF":4.9000,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"22","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Mathematica","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.4310/ACTA.2017.v218.n2.a1","RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 22
Abstract
For a closed surface S, the Hitchin component Hitn(S) is a preferred component of the character variety consisting of group homomorphisms from the fundamental group �1(S) to the Lie group PSLn(R). We construct a parametrization of the Hitchin component that is well-adapted to a geodesic laminationon the surface. This is a natural extension of Thurston's parametrization of the Teichmuller space T(S) by shear coordinates associated to �, corresponding to the case n = 2. However, significantly new ideas are needed in this higher dimensional case. The article concludes with a few applications.