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Department of Mathematics Seminars and Talks

 
Seminar

Fields Geometric Analysis Colloquium

Talk Information
Title
Minimal surfaces and Higgs bundles at high energy
Start date and time
15:30 on Thursday November 06, 2025
Duration in minutes
60 (until 16:30 on Thursday November 06, 2025)
Room
Stewart Library, Fields Institute, 222 College St.
Streaming link
Streaming password
External video link
Abstract

For S a closed surface of genus at least 2, Hitchin representations from pi_1(S) to SL(n,R) naturally generalize Fuchsian representations to SL(2,R), which are equivalent to hyperbolic structures on S. Labourie proved that every Hitchin representation comes with an invariant minimal surface in the corresponding symmetric space, and he conjectured that uniqueness holds as well.

In this talk, we'll explain how we used Higgs bundles to produce large area minimal surfaces that give counterexamples to Labourie's conjecture (for all n at least 4), and we'll overview recent and related advances in the theory of Higgs bundles at high energy. This represents joint work with Peter Smillie, plus a new work in progress.

Background info

http://www.fields.utoronto.ca/activities/25-26/geometric-analysis-colloquium

Speaker Information
Full Name
Nathaniel Sagman
Personal website
Institution
University of Toronto
Institution URL