Studying Deformations of Fuchsian Representations with Higgs Bundles

This is a survey article whose main goal is to explain how many components of the character variety of a closed surface are either deformation spaces of representations into the maximal compact subgroup or deformation spaces of certain Fuchsian representations. This latter family is of particular in...

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Published in:Symmetry, Integrability and Geometry: Methods and Applications
Date:2019
Main Author: Collier, B.
Format: Article
Language:English
Published: Інститут математики НАН України 2019
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/210065
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Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Studying Deformations of Fuchsian Representations with Higgs Bundles / B. Collier // Symmetry, Integrability and Geometry: Methods and Applications. — 2019. — Т. 15. — Бібліогр.: 34 назв. — англ.

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Digital Library of Periodicals of National Academy of Sciences of Ukraine
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author Collier, B.
author_facet Collier, B.
citation_txt Studying Deformations of Fuchsian Representations with Higgs Bundles / B. Collier // Symmetry, Integrability and Geometry: Methods and Applications. — 2019. — Т. 15. — Бібліогр.: 34 назв. — англ.
collection DSpace DC
container_title Symmetry, Integrability and Geometry: Methods and Applications
description This is a survey article whose main goal is to explain how many components of the character variety of a closed surface are either deformation spaces of representations into the maximal compact subgroup or deformation spaces of certain Fuchsian representations. This latter family is of particular interest and is related to the field of higher Teichmüller theory. Our main tool is the theory of Higgs bundles. We try to develop the general theory of Higgs bundles for real groups and indicate where subtleties arise. However, the main emphasis is placed on concrete examples, which are our motivating objects. In particular, we do not prove any of the foundational theorems; rather, we state them and show how they can be used to prove interesting statements about components of the character variety. We have also not spent any time developing the tools (harmonic maps) that define the bridge between Higgs bundles and the character variety. For this side of the story, we refer the reader to the survey article of Q. Li [arXiv:1809.05747].
first_indexed 2025-12-07T21:24:15Z
format Article
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id nasplib_isofts_kiev_ua-123456789-210065
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
issn 1815-0659
language English
last_indexed 2025-12-07T21:24:15Z
publishDate 2019
publisher Інститут математики НАН України
record_format dspace
spelling Collier, B.
2025-12-02T09:35:17Z
2019
Studying Deformations of Fuchsian Representations with Higgs Bundles / B. Collier // Symmetry, Integrability and Geometry: Methods and Applications. — 2019. — Т. 15. — Бібліогр.: 34 назв. — англ.
1815-0659
2010 Mathematics Subject Classification: 14D20; 14F45; 14H60
arXiv: 1809.06786
https://nasplib.isofts.kiev.ua/handle/123456789/210065
https://doi.org/10.3842/SIGMA.2019.010
This is a survey article whose main goal is to explain how many components of the character variety of a closed surface are either deformation spaces of representations into the maximal compact subgroup or deformation spaces of certain Fuchsian representations. This latter family is of particular interest and is related to the field of higher Teichmüller theory. Our main tool is the theory of Higgs bundles. We try to develop the general theory of Higgs bundles for real groups and indicate where subtleties arise. However, the main emphasis is placed on concrete examples, which are our motivating objects. In particular, we do not prove any of the foundational theorems; rather, we state them and show how they can be used to prove interesting statements about components of the character variety. We have also not spent any time developing the tools (harmonic maps) that define the bridge between Higgs bundles and the character variety. For this side of the story, we refer the reader to the survey article of Q. Li [arXiv:1809.05747].
The article is roughly based on a three-hour mini-course given by the author at the University of Illinois at Chicago in June 2018. I would like to thank Qiongling Li for her complementary minicourse. I would also like to thank all the participants of the mini-courses for their enthusiasm and interest. The author is funded by a National Science Foundation Mathematical Sciences Postdoctoral Fellowship, NSF MSPRF no. 1604263.
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Інститут математики НАН України
Symmetry, Integrability and Geometry: Methods and Applications
Studying Deformations of Fuchsian Representations with Higgs Bundles
Article
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spellingShingle Studying Deformations of Fuchsian Representations with Higgs Bundles
Collier, B.
title Studying Deformations of Fuchsian Representations with Higgs Bundles
title_full Studying Deformations of Fuchsian Representations with Higgs Bundles
title_fullStr Studying Deformations of Fuchsian Representations with Higgs Bundles
title_full_unstemmed Studying Deformations of Fuchsian Representations with Higgs Bundles
title_short Studying Deformations of Fuchsian Representations with Higgs Bundles
title_sort studying deformations of fuchsian representations with higgs bundles
url https://nasplib.isofts.kiev.ua/handle/123456789/210065
work_keys_str_mv AT collierb studyingdeformationsoffuchsianrepresentationswithhiggsbundles