Equidistribution and counting of periodic tori in the space of Weyl chambers
Nguyen-Thi Dang
Universität Heidelberg, Heidelberg, Germany; Université Paris-Saclay, Orsay, FranceJialun Li
Universität Zürich, Zürich, Switzerland; École Polytechnique, Palaiseau, France

Abstract
Let be a semisimple Lie group without compact factor and a torsion-free, cocompact, irreducible lattice. According to Selberg, periodic orbits of regular Weyl chamber flows live on tori. We prove that these periodic tori equidistribute exponentially fast towards the quotient of the Haar measure. From the equidistribution formula, we deduce a higher rank prime geodesic theorem. As a corollary, we obtain an upper bound of the growth of conjugacy classes with non-trivial polynomial term.
Cite this article
Nguyen-Thi Dang, Jialun Li, Equidistribution and counting of periodic tori in the space of Weyl chambers. Comment. Math. Helv. (2025), published online first
DOI 10.4171/CMH/594