Home /  Exponential mixing and counting conjugacy classes for Anosov subgroups

Seminar

Exponential mixing and counting conjugacy classes for Anosov subgroups March 02, 2026 (11:10 AM PST - 12:10 PM PST)
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Location: SLMath: Eisenbud Auditorium, Online/Virtual
Speaker(s) Pratyush Sarkar (University of California, San Diego)
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In Margulis's thesis, he used mixing of the geodesic flow to prove the prime geodesic theorem which gives an asymptotic formula for the number of primitive closed geodesics according to their lengths in a closed hyperbolic manifold, i.e., for uniform lattices in SO(n, 1). A power-saving error term was obtained for convex cocompact subgroups by Naud and Stoyanov. It is natural to seek generalizations in the higher rank setting such as SL(n, R). Sambarino obtained a prime orbit theorem without an error term for Anosov subgroups. In a joint work with Michael Chow, we go further and establish exponential mixing of an appropriate dynamical system and use that to obtain a power-saving error term.


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